59 results about "Artificial reefs" patented technology

The invention discloses an artificial biological reef for naturally repairing coral, a system and a preparation method. The artificial biological reef body comprises a main body structure made of a cement-based composite material, and at least one hollow cavity is formed in the main body structure; the ecological through holes penetrate through the wall thickness of the main body structure and are used for promoting water flow exchange and marine organism channels; the biological affinity surface layer is arranged on the surface of the main body structure, is made of cement-based materials mixed with seaweed extracts and has rough textures so as to promote attachment of coral larvae; and a reinforcing framework formed by a corrosion-resistant fiber reinforced material embedded in the main body structure improves the overall structural strength and impact resistance. The system comprises a plurality of reefs, special connecting pieces and a foundation stabilizing platform, and can be combined into an array for simulating a natural reef space structure. The preparation method comprises the steps of seaweed extract preparation, bioactive slurry preparation, assembly prefabrication, integrated pouring forming, maintenance and function integration, and preparation of the eco-friendly, stable-structure and multifunctional artificial reef is achieved.

This invention discloses a device and method for the propagation, release, and rewilding training of large yellow croaker fry, relating to the field of marine biological resource conservation technology. The device includes: a water tank containing water, with multiple artificial reefs placed inside; a light source positioned above the water tank; multiple wave-making pumps evenly distributed along one side of the inner wall of the water tank; a release structure for releasing predator pheromones into the water tank; a camera mounted on the inner wall of the water tank; and a controller electrically connected to the camera, light source, and wave-making pumps. The camera collects behavioral characteristic information of the large yellow croaker during rewilding training and sends this information to the controller. A fish behavior analysis system comprehensively analyzes the swimming and reef usage of the large yellow croaker fry in the water tank to determine the effectiveness of the rewilding training. The advantages of this invention are enhanced ability of large yellow croaker fry to adapt to the marine environment and improved survival rate of released fry.

This item is an artificial reef used to create seaweed beds.

This invention discloses an acoustic assessment method for the attitude of artificial reefs. Based on side-scan sonar images, noise reduction is performed using two-dimensional empirical mode decomposition. Targets and their shadow contours in the images are extracted using fuzzy C-means and horizontal clustering algorithms. The image shadow contours are matched with shadow contours from a constructed 3D reef model library to estimate the reef's tilt angle. The height and subsidence of the reef are estimated based on the geometric relationship between the towed fish, the target length, and the shadow length, thus achieving the assessment of the artificial reef's attitude. This invention leverages the fast computation speed of fuzzy C-means clustering and the high segmentation accuracy of horizontal clustering to achieve rapid and accurate target segmentation in side-scan sonar images. Matching the target shadow contours in the side-scan sonar images with the projected contours of the constructed 3D artificial reef model enables the assessment of the artificial reef's attitude.

The present invention highlights the use of an innovative submersible structure made of concrete enriched with dead algae to promote marine biodiversity. This biodegradable material ensures better integration into aquatic ecosystems while providing a sustainable habitat for marine organisms. Furthermore, the integration of modern technologies such as sensors, sounders, cameras, GPS, modems, and underwater drones is highlighted in both texts. These tools enable real-time monitoring of artificial reefs, ensuring precise tracking of changes in marine habitats and local ecosystems. This monitoring ensures not only effective management of marine ecosystems but also enhanced protection against threats such as coastal erosion. Finally, both sections agree on the environmental and economic benefits of the project. In addition to promoting marine conservation, this invention paves the way for sustainable activities, including ecotourism, while emphasizing ecological sustainability and technological innovation. The project thus illustrates a holistic approach to addressing the environmental challenges linked to the degradation of marine ecosystems. The project represents a significant step forward in the management of marine ecosystems thanks to the combination of modern technological solutions and innovative, eco-friendly materials. By combining biodegradable artificial reefs with advanced monitoring devices, this solution offers an integrated approach to restoring marine biodiversity, protecting coastlines, and promoting sustainable activities. It represents an exemplary model of responsible and technological development, meeting current environmental conservation needs while offering viable economic opportunities.

The application discloses a kind of artificial reef concrete preparation methods, comprising: preparation steel slag fine aggregate, preparation steel slag base coarse aggregate, preparation artificial reef concrete;Specifically including the steel slag that meets the condition is screened, obtains two different particle sizes steel slag particles, carries out stabilization, screening and grinding, washing treatment, then the steel slag powder obtained is two-step granulation and two-step maintenance, obtains steel slag base coarse aggregate;Finally steel slag fine aggregate, coarse aggregate, cementing material, water and admixture are mixed uniformly according to preset proportion after forming maintenance, preparation adult artificial reef concrete.The steel slag content of the present application is not less than 55%, the 28-day compressive strength of concrete is higher than 38MPa, the strength retention rate is not less than 95% after seawater immersion for 360 days, pH is stabilized at 8.39~8.46, close to natural seawater pH value 8.2.Using steel slag for artificial reef concrete can realize large-scale, high-value utilization of steel slag, adapt to the current situation of large demand for artificial reef, and also can greatly reduce the production cost of artificial reef.

The utility model provides an underwater multiplication reef for controlling fish swimming direction, which comprises a multiplication reef main body, a wave power generation device is arranged above the multiplication reef main body and floats on the sea surface, anchor chains are arranged on two sides of the wave power generation device, one end of each anchor chain is fixed with the bottom of the wave power generation device, and the other end of each anchor chain is fixed with the other end of the wave power generation device. The other end of the anchor chain is inserted into the seabed through an anchor hook, a bubble generator is installed below the motion path of a swing plate of the wave power generation device, the swing plate of the wave power generation device is directly connected with a water pump plunger of the bubble generator through a rigid connecting rod, and an exhaust pipeline is arranged below the bubble generator. The proliferation reef body comprises a first-layer reef body, a second-layer reef body and a third-layer reef body which are sequentially stacked from top to bottom, the first-layer reef body is a reef body of a cube structure, the interior of the first-layer reef body is hollow, each face of the first-layer reef body is provided with a circular through hole communicated with the interior, the second-layer reef body and the third-layer reef body are both hexagonal reef bodies, and the second-layer reef body and the third-layer reef body are both hexagonal reef bodies. And the hexagonal reef body is hollow.

The invention belongs to the technical field of marine ecological restoration and marine ranching, and particularly relates to a marine ecological restoration device based on cooperation of an artificial reef body and seaweed transplantation. The device comprises a basic reef body, a seaweed cultivation module, a filter feeding shellfish attachment area, a sensor group, a control module and an execution mechanism, ecological coupling of seaweed and shellfish is achieved through optimized layout and intelligent regulation, water quality purification and system stability are improved, and the device is suitable for active restoration and intelligent management of the marine ecological environment.

comprises the following steps: S1. Pretreatment of seashells: Collect, sterilize and crush seashells to reach 2,500 meshes. S2. Preparation of 3D printing materials: Mix polyhydroxyalkanoate and additives with the calcium carbonate powder obtained in S1, and prepare 3D printing wires using an extruding machine. S3. Preparation of 3D printed artificial reef: Use the 3D printing wires to print artificial reef modules with a topological shape. S4. Installation of artificial reefs: Fix and connect the printed artificial reef modules to each other, and fix them according to different occasions, for example, fix in form of floating reefs or on benthal terrain. The invention enables efficient, environmentally friendly and customizable restoration of marine habitats. The method offers advantages such as material sustainability, topologically optimized structures that enhance water flow through artificial reefs, flexible installation, substantial ecological benefits, and lightweight artificial reefs that facilitate transportation.

The application discloses an assemblable chain type artificial fish reef, which comprises a plurality of fish rooms, the fish rooms are connected with each other through connecting rods and simple ball hinges to form a chain type structure, the fish room is in a symmetrical double-fan-shaped column structure, ball heads of the simple ball hinges are respectively installed on two end faces of the fish room, ball seats of the simple ball hinges are respectively installed on two ends of the connecting rod, the ball heads can rotate in the ball seats to stretch and fold the fish rooms, the fish rooms are connected with each other to form a chain type overall structure, the fish rooms can be nested and stacked on the bottom of a sea area with a complex structure to form a stable juvenile fish breeding field and a shelter for cephalopods, the juvenile fish breeding field and the shelter can provide a breeding environment for the juvenile fish to feed, stay and avoid enemies, improve the survival rate of the juvenile fish of reef-loving fish, and provide a habitat for cephalopods such as short octopus to avoid enemies.

The invention discloses an oyster ecological reef cluster specially designed for a soft substrate intertidal zone mud flat and based on timber pile fixation, and belongs to the technical field of marine ecological restoration and coast engineering. The invention provides a suspension type reef construction scheme based on the friction pile principle aiming at the problem that an existing gravity type artificial reef is prone to sedimentation on a silty and muddy beach. The ecological reef cluster is composed of a plurality of reef body units, each unit comprises a pine pile set, and net bags are hung and fixed through rope knots. Trace terpenoids released by the pine material and biological membranes on the surfaces of the scallop shells have a synergistic effect, so that the attachment rate of the oyster larvae is remarkably increased. According to the method, through a'biological armor 'mechanism, the wood piles are wrapped and protected from being corroded by ship maggots through rapid calcification of oysters, a hydrodynamic field is optimized through 50-meter large-interval staggered layout, water body exchange and bait supply are guaranteed while wave energy is reduced, and the problem that structural stability and biocompatibility are difficult to consider in ecological restoration of the soft foundation beach is solved.

This invention discloses an environmentally friendly composite artificial reef material and its preparation method, belonging to the field of marine ecological restoration technology. The material comprises a composite cementitious material, composite aggregate, modified biochar, shell powder, alkali activator, water, microbial slow-release microspheres, and basalt fiber. The preparation method includes microsphere and modified biochar preparation, dry mixing, wet mixing, molding and curing, and functionalization treatment. This invention addresses the problems of high alkalinity and slow bio-attachment in traditional artificial reefs by employing a solid waste-based composite cementitious system to reduce alkalinity. Microbial microspheres are embedded at specific points on the surface through geometric locking of micro-pits and anchoring with calcium alginate gel, achieving a long-term slow-release supply of microorganisms. This invention combines environmental friendliness, low alkalinity, and active microbial supply.

According to the scheme, the protective structure comprises a foundation layer and a drainage structure, the foundation layer comprises geotechnical cloth, an inverted filter layer formed by gravel is laid on the geotechnical cloth, a block stone layer is laid on the inverted filter layer, gravel caulking is arranged in block stone gaps of the block stone layer, and the drainage structure is arranged above the block stone layer. The geotextile and gravel inverted filter layer is adopted on the foundation layer structure foundation, loss of sea sand below is prevented, the stability of the foundation is kept, meanwhile, the block stone layer is laid on the upper portion, the influence of uneven settlement of the beach soft foundation on the drainage pipe can be effectively reduced, and the drainage effect is improved. And the stability and durability of the coastal city rainwater pipe network subsea drainage pipe structure are obviously improved.

This invention discloses a modular anchor-chain artificial reef, comprising an anchor module and a chain module. The main body of the anchor module is an anchor-type artificial reef, and the main body of the chain module is a chain-type artificial reef. The anchor-type and chain-type artificial reefs are connected by a ball-and-socket structure. The anchor-type artificial reef includes an anchor shank, an anchor foot, and an anchor claw, with the anchor foot and anchor claw respectively located at the two ends of the anchor shank. The anchor shank is covered with a hatching trough. The chain-type artificial reef includes multiple fish chambers connected by a ball-and-socket structure. This invention addresses the problem that current artificial reefs have simple structures and limited functions, failing to meet the functional needs of target species at various stages of their life cycle. By combining anchor-type reefs with spawning protection functions and chain-type reefs with juvenile protection functions into a single unit reef through a modular combination, a fully functional habitat space can be formed around a modular anchor-chain reef.

The invention belongs to the technical field of ocean engineering, and particularly discloses a modular floating type artificial fish reef system which comprises a modular buoyancy unit, an ecological function unit, a dynamic anchoring unit and a monitoring system. The buoyancy unit adopts a corrosion-resistant high-density polyethylene shell, and a sealed air cabin and a counterweight cabin are arranged in the buoyancy unit; the ecological function unit is based on a hexagonal main framework and is connected with a triangular truss to form a fractal topological framework, and an inhabiting environment is provided for marine organisms. The dynamic anchoring unit is connected with a seabed adsorption anchor through an elastic mooring chain to fix the system in a set sea area; the modular buoyancy unit is used for enabling the fish reef to stably suspend in a set water layer; the ecological function unit is used for providing a three-dimensional space for inhabitation, attachment and reproduction of marine organisms and simulating a natural marine environment; the dynamic anchoring unit is used for stably suspending the fish reef in a set sea area; the monitoring system is used for quantitative management of the surrounding environment and the ecological effect of the fish reef.

The invention relates to the field of artificial fish reefs for trapping sea cucumbers, in particular to an experimental box for testing the trapping effect of artificial design factors on sea cucumbers, which comprises an experimental box main body and experimental units, the experimental box main body is in the shape of a regular hexahedral column, and the experimental box main body comprises angle fixing plates, angle short plates, angle boundary plates, pore plates and equal-angle fixers, the angle fixing plate is in a circular ring shape, a plurality of installation positioning grooves are evenly formed in the angle fixing plate, the six hole plates are arranged, round holes are formed in the hole plates, the equal-angle fixing device is in a circular shape, a plurality of fixing grooves are evenly formed in the equal-angle fixing device, and the angle boundary plate is connected with the edges of the hole plates on the inner sides of the hole plates through the equal-angle fixing device. A plurality of angle boundary plates and angle short plates are arranged, the angle boundary plates and the angle short plates are inserted into the mounting positioning grooves, the outer side of each pore plate is connected with a group of experiment units through angle fixers, the bottom surfaces of the experiment units are flush with the edge of the pore plate, and sea cucumber placement areas are arranged on the angle fixing plates. The experiment box is of a detachable and adjustable structure, the whole box does not need to be detached when factor parameters are replaced, and the experiment efficiency is improved.

The invention relates to an island seaweed field ecological restoration method based on artificial algal reefs, and belongs to the technical field of marine ecological restoration engineering. The method aims at solving the problems that in the prior art, algae are slowly attached to and grow on natural reefs, attached larvae are disengaged due to algal reef displacement caused by wave scouring, and large prefabricated parts are difficult to hoist and position on the sea and high in risk. According to the technical scheme, the method comprises the steps that an artificial algal reef which is of a hollow structure, provided with holes in the outer vertical face and provided with connecting lug plates and bottom mounting lug plates is prepared; seaweed spores are attached to reefs and grow to a certain length in the water tank of the seedling raising field; after being transported to a target area, the algal reefs are installed in a linkage mode in a low tide period, that is, each algal reef is independently anchored to the seabed through the installation lug plates, and then the adjacent algal reefs are transversely connected through the connection lug plates and the screw rods to form an integral structure. The method is mainly used for rapid construction and ecological restoration of the sea area seaweed field around the island.

The invention discloses a dynamic comprehensive monitoring platform for an artificial fish reef, which obtains ecological data such as fish varieties and water quality parameters in real time through a data acquisition module, ensures timeliness and continuity of the data, enables managers to master ecological dynamic states immediately, and overcomes the defect that the traditional method is difficult to know ecological changes in time. Meanwhile, a classification database construction module stores data in a multi-dimensional classification mode, regionalized reference data are formed, a dynamic monitoring and evaluation engine calculates an ecological benefit comprehensive index according to the data, multi-dimensional comprehensive evaluation can comprehensively and systematically reflect the ecological benefits of the artificial fish reef, and the problem that the evaluation index is single is solved; besides, the intelligent early warning and decision support module sets a safety threshold value, performs automatic early warning when indexes are abnormal, and generates a targeted and operable repair suggestion report, so that the platform can respond quickly, managers can take repair measures in time, ecological problem deterioration is avoided, and the problem that targeted repair cannot be performed in time is effectively solved.

The invention provides a preparation method of solid waste-based artificial fish reef concrete based on steel slag and slag aggregate. The method comprises the following steps: obtaining steel slag fine aggregate; obtaining blast furnace heavy slag coarse aggregate; a cementing material is prepared; uniformly mixing the fine aggregate, the coarse aggregate and the cementing material according to a preset proportion, then adding the water and the additive, and then uniformly mixing again to prepare a uniform concrete mixture; the prepared concrete mixture is subjected to compact forming and curing hardening treatment, and the artificial fish reef concrete is prepared. The solid waste ratio of the artificial fish reef prepared in the invention exceeds 90%, and the test block shows excellent long-term mechanical properties, marine environment safety and biocompatibility. According to the method, large-scale consumption of bulk solid wastes such as the blast furnace slag and the steel slag can be achieved, mining of natural gravel in the artificial fish reef preparation process can be reduced, and the method has important significance on marine ecological environment restoration and natural resource protection.

This invention relates to the field of water environment engineering technology, and discloses a ring-shaped columnar artificial reef and a method for constructing a coastal ecological field. The artificial reef includes composite piles, first connectors, and connecting beams. Multiple composite piles are vertically set in the mudflats and arranged circumferentially. Multiple first connectors are correspondingly set on the composite piles, and multiple connecting beams are arranged side by side. The two ends of the connecting beams are respectively connected to the first connectors on the adjacent composite piles. The connecting beams and composite piles form a ring-shaped closed structure. In this invention, when the composite piles are set in the mudflats, the connecting beams between the composite piles can play a supporting role on the mudflats, preventing the composite piles from sinking too deeply and causing the entire ring-shaped columnar artificial reef to sink into the mudflat silt. The ring-shaped closed structure becomes a habitat for marine organisms, which is conducive to maintaining the stability of the coastal ecological environment. The vertically set composite piles can realize the flow velocity of the shallow area, cut off the surface gullies, prevent further erosion of the surface, and stabilize the surface.

The application discloses a combined artificial fish reef and belongs to the technical field of fish reefs. The combined artificial fish reef comprises a reef body, the reef body comprises a fixed body and a movable body, a fixed component is arranged on the fixed body, the fixed body is fixedly connected to the sea bottom through the fixed component, one side surface of the fixed body is configured as a fixed flow-encountering surface, a movable component is further arranged on the fixed body, the movable body is connected to the fixed body through the movable component, a movable flow-encountering surface is arranged on the movable body, the movable flow-encountering surface and the fixed flow-encountering surface are located on the same side of the reef body, and the fixed flow-encountering surface and the movable flow-encountering surface jointly form a flow-encountering surface. The movable component is used for changing the position of the movable body on the fixed body, so that the size of the movable flow-encountering surface is changed. The combined artificial fish reef can change the size of the flow-encountering area by changing the position of the movable body on the fixed body, adapt to different sea current sizes in different seasons, and improve the resource distribution around the reef body to the maximum extent under the premise of ensuring the stability of the reef body.

This invention relates to a bio-connectivity channel and its design method, belonging to the field of tidal flat remediation engineering technology. Addressing the problems of poor permeability of silt-promoting dikes, insufficient water continuity between reservoirs, and inadequate biological flow in existing tidal flat remediation projects, this invention proposes a bio-connectivity channel composed of a prefabricated, cavity-type component with no elevation difference and an artificial reef system. The prefabricated component forms a bidirectional, full-tidal passageway by incorporating longitudinal / transverse baffles, resting pools, and bottom slab openings. The supporting design method includes steps such as data collection and determination of typical tidal levels, numerical simulation of the flow field, optimization of prefabricated component dimensions (based on suitable flow velocities for fish), structural stability verification, and artificial reef system installation. This channel can effectively improve hydraulic communication and biological flow between reservoirs, reduce the obstructive impact of engineering on aquatic organisms, and create habitats for benthic organisms.

According to the technical scheme, the artificial fish reef capable of automatically dredging comprises a fish reef body, a plurality of first overflowing holes are formed in the front face and the back face of the fish reef body, a plurality of second overflowing holes are formed in the upper face and the lower face of the fish reef body, and third overflowing holes are formed in the right face and the left face of the fish reef body. Fixing columns are arranged in the centers of the third overflowing holes and connected with the fish reef body through first connecting rods, springs are arranged on the fixing columns, a central spiral column is arranged between the fixing columns at the two ends, the springs are arranged on the outer surface of the central spiral column in a sleeving mode, and the central spiral column is in sliding fit with the central column. And spiral blades are arranged on the outer surface of the central column. The fish reef has the advantages that the artificial sludge cleaning period can be prolonged, the sludge cleaning cost is reduced, no external power source is needed, and energy conservation and environmental protection are achieved.

The utility model discloses an artificial fishing reef structure made of waste steel rails and sleepers, which comprises a plurality of waste steel rails arranged at intervals, a plurality of self-locking mechanisms are arranged on any waste steel rail at intervals, and a plurality of sleepers are arranged between two adjacent waste steel rails. The two ends of any sleeper are connected with the two waste steel rails through the two self-locking mechanisms correspondingly. A hiding room with an inlet in one side is arranged on any sleeper. The device is made of waste steel rails and sleepers on a railway, so that the device is very environment-friendly in old material utilization; the sleepers and the steel rails are connected through the self-locking mechanisms, assembling and disassembling are convenient, and therefore operation efficiency is improved.

The invention relates to the technical field of ocean engineering measurement and calculation, in particular to an artificial fish reef empty volume calculation method based on the convex hull volume of point cloud data. The method comprises the following steps: obtaining original point cloud data, processing the original point cloud data, calculating a convex hull of the point cloud data, calculating the volume of a convex polyhedron, and calculating the space volume of a fish reef cluster. A convex hull algorithm is adopted, the measurement process is relatively simplified, and only one-time measurement needs to be completed on a fish reef sea area; the calculation process is simple and efficient, and is suitable for empty volume calculation of large-scale fish reef clusters; especially for a hollow frame type fish reef without surrounding, the accuracy of empty volume calculation of the fish reef can be obviously improved; the method is high in flexibility, point cloud data acquisition and processing parameters can be adjusted according to actual requirements, and the requirements of different application scenes are met; the situation that the calculation error of the empty volume of the frame fish reef body is huge due to a conventional volume calculation method is avoided, and the objectivity and repeatability of a calculation result are improved.

The utility model relates to an artificial reef of preventing being blocked relates to the aquaculture technology field for solving the problem that the artificial reef of prior art is easy to be blocked by silt, an artificial reef of preventing being blocked, including base, fish guard and connecting system, the fish guard includes fish guard frame, frame support, flow guide disc, disc support group, bottom sleeve and a plurality of baffle, the fish guard frame is the cuboid frame structure, each baffle is arranged in the fish guard frame respectively, the upper side portion of each baffle is rotatably connected in the upper portion of fish guard frame respectively, the lower portion of fish guard frame is equipped with a plurality of limiting protrusions, and the limiting protrusion is used for limiting the amplitude of baffle rotation, the flow guide disc is arranged below the fish guard frame, and the upper surface of flow guide disc is in the shape of high in the middle and low on the four sides. Advantageous effects are, can solve the problem that the artificial reef of prior art is easy to be blocked by silt.

The utility model relates to a combined artificial fish reef which adopts a steel structure frame to assemble concrete porous functional prefabricated functional parts and natural shell bag functional parts, the upper layer and the lower layer are combined and assembled, and the natural shell bag functional parts on the upper layer are light in weight and easy to obtain in material. The concrete porous functional prefabricated functional part is heavily installed on the lower layer to keep the stability of the fish reef. The combined type fish reef is light in weight and low in cost, the combined type structure can be used according to the number and the position of two kinds of functional parts according to the bearing capacity of different sea area substrates, use is convenient, applicability is high, and the artificial fish reef silting risk is greatly reduced.

The invention relates to the technical field of artificial fish reef preparation and marine ecological restoration, and discloses a low-temperature curing preparation method of a bionic artificial fish reef with a hierarchical pore structure based on a biomineralization principle. The preparation method comprises the following steps: mixing silicon-calcium-based industrial solid waste, a marine biomass material, a biological template agent and an alkaline activator to prepare a biomimetic mineralization precursor; a hierarchical pore structure with macroscopic pores, mesoscopic pores and microcosmic pores in synergistic distribution is constructed through compression molding of a gradient pore distribution mold; carrying out biomineralization low-temperature curing under the conditions of controlled temperature, humidity and carbon dioxide atmosphere; and carrying out bionic surface treatment on the cured artificial fish reef. The prepared artificial fish reef has the advantages of being high in pore connectivity, good in mechanical property and high in surface biocompatibility, marine organism attachment and ecological succession are facilitated, the ecological adaptability of the artificial fish reef is improved while preparation energy consumption is reduced, and the artificial fish reef is suitable for the fields of marine ecological restoration and fishery resource protection.

The invention discloses a self-locking artificial reef which comprises a plurality of reef units, each reef unit is provided with a protruding portion and a concave portion matched with the protruding portion, every two adjacent reef units are inserted into the corresponding concave portion through the corresponding protruding portion to form an interlocking structure, a cavity is formed in each reef unit, and through holes communicated with the cavities are formed in the top and the bottom of each reef unit respectively. Water power exchange holes communicated with the cavity are formed in the side wall, and external water can enter and exit from the hollow area in the frame through the water power exchange holes in the side wall to form bidirectional circulation and water exchange so as to promote coral growth; coral planting holes are distributed in the outer surfaces of the reef body units, and coral planting rings are arranged at the tops. The self-locking artificial reef body can be used for repairing the coral reef ecological environment in an offshore area, improving the coral growth environment and stabilizing the substrate. The reef body is complex and porous and is in a three-dimensional shape similar to a honeycomb and a chain, when waves pass through holes, energy is dispersed, friction is consumed, and wave impact force is reduced.

To provide an artificial fishing bank capable of assisting the inhabitation of marine plants and fishes.SOLUTION: The artificial fish reef 1 according to the present embodiment includes a first basket member 10 having a rectangular parallelepiped shape and formed of a metal net member, a second basket member 10 having a rectangular parallelepiped shape and formed of a metal net member, the second basket member 10 being stacked on the first basket member 10 so as to intersect the first basket member 10, and a filling member 40 filling the first basket member 10 and the second basket member 10. The first basket member 10 or the second basket member 10 has a first filling area 102A, a second filling area 102B, and a third filling area 102C filled with the filling member 40, and these are areas located at different positions. The filling factor of the filling member 40 in the second filling region 102A is lower than the filling factor of the filling member 40 in the first filling region 102C and the third filling region 102B. In a state in which the second basket member 10 is stacked on the first basket member 10, the first filling region 102A and the third filling region 102C in the second basket member 10 are supported by the first basket member 10.SELECTED DRAWING: Figure 3