FISH REEF FOR SPINY LOBSTER UTILIZING WATER-PERMEABLE CONCRETE

摘要

PURPOSE:To fill essential conditions required as a fish reef for spiny lobsters and enhance collecting effects thereof by interposing and inserting respective plural support pedestals between plural water-permeable concretes having openings of a suitable shape, forming multistage shaped units and further forming mutually communicating hollow chambers in the interior of the shaped units. CONSTITUTION:Respective plural support pedestals (12a), (14a), (16a), (18a), (20a), (22a) and (24a) are interposed, inserted and fixed between respective water- permeable concretes having openings (11a), (13a), (15a), (17a), (19a), (21a) and (23a) of a preset suitable shape to form multistage shaped units 11, 13, 15, 17, 19, 21 and 23. Mutually communicating hollow chambers 25, 26, 27, 28, 29, 30 and 31 are formed in the interior of the aforementioned shaped units 11, 13, 15, 17, 19, 21 and 23 and a large-diameter opening (11a) for admitting spiny lobsters into the hollow chambers 25, 26, 27, 28, 29, 30 and 31 are simultaneously provided at nearly the central position of the lowermost stage 11 of the shaped units.