| 摘要 |
PROBLEM TO BE SOLVED: To provide a biting damage preventive net structure for a natural gathering place for seaweed preventing seaweed-biting animals such as fish from invading into a seaweed bed where seaweed is raised so that the seaweed does not suffer from biting damage. SOLUTION: The biting-damage preventive net structure for a natural gathering place for seaweed 1 is structured as follows: radially and horizontally forming a plurality of posts 3 in a vertical direction of a column 2 where seaweed 5 is raised and attaching rings 4 disposed in a concentric with the column 2 state at the tip end parts of a plurality of the posts 3 to form a pivotal body 1a; and covering the periphery of the rings with a bottom part-open cylindrical fish net 6. COPYRIGHT: (C)2007,JPO&INPIT
|
