An amphibious tidal tank, comprising a main tank (1), a bottom tank (2), and a partition plate (103), the partition plate (103) dividing the main tank (1) into a
land area (102) and a
water area (101), and further comprising: an overflow device and a drainage area (104), water in the
water area (101) overflowing to the drainage area (104) by means of the overflow device; a first drainage
pipe (105) and a second drainage
pipe (106) arranged in the drainage area (104), a water inlet of the first drainage
pipe (105) being higher than a water inlet of the second drainage pipe (106), the water inlet of the second drainage pipe (106) being not higher than the overflow height of the overflow device, and an electric
ball valve (108) being provided on the second drainage pipe (106); and a first
water supply pipe (107) and a water pump (204), the water pump (204) being arranged in the bottom tank (2). The
water area (101) of the amphibious tidal tank has a relatively high
water level when being at a low
tide level, and in the
land area (102), there is a relatively thick land layer having good air permeability. Therefore, the requirements of organisms in the
intertidal zone on the land layer and the requirements of
aquatic organisms on the amount of water can be satisfied. In addition, the relatively thick land layer allows burrowing organisms in the
intertidal zone to dig relatively deep holes, which is beneficial to the survival of the burrowing organisms, and improves the ornamental value of the amphibious tidal tank.