| 摘要 |
PROBLEM TO BE SOLVED: To provide a fenced net of a stationary net that eliminates entering of giant jellyfish such as Stomolophus nomurai by a comparatively simple improvement of a conventional fenced net, effectively catches fishes and effectively functions even in change in the direction of flow of ocean current. SOLUTION: The fenced net of the stationary net arranged in a fishing place in the ocean current flow is obtained by forming an opening through which the giant jellyfish moving along the fenced net to the end opening direction moves from the upstream side to the downstream side of the ocean current, and installing a closing net closing the opening when the flow velocity of the ocean current directing from the upstream side to the downstream side is lower than a prescribed value, and opening the opening when the flow velocity is not lower than the prescribed value so as to form an opened passage enabling the giant jellyfish to move to the downstream side. COPYRIGHT: (C)2011,JPO&INPIT
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