Sea urchin nursery floor

摘要

(57) [summary] [purpose] juvenile sea urchin is protected from predators, it may adhere to the shell of shellfish, providing a sea urchin nursery floor you can expect a stable growth, while the growth was seaweed as bait. [Configuration] to open the connecting hole (2) in the center of the shell of the sail fresh shellfish (1), the hollow between the shell of shellfish through the connecting line (3) (1) and the shell of the shell (1) sea ​​urchin nursery floor characterized by having a large number of rooms (4).