| 摘要 |
PROBLEM TO BE SOLVED: To provide a continuous stage type shellfish culture basket which avoids influence of ocean current and eliminates influence of inclination and rotation.SOLUTION: The shellfish culture basket includes: plural upper/lower frames 2 formed in a ring shape; a bed net 3 stretched in a face of the respective frames 2; plural suspension ropes 4 connecting peripheral parts of the respective frames 2 in a vertical direction in a state in which the frames 2 are arranged in plural upper/lower stages; a side net 5 stretched in a circumference of the frames 2 in plural upper/lower stages; raising chambers 6 in plural upper/lower stages formed inside while surrounded by the upper/lower bed nets 3 and the side net 5. In least at one area in an intermediate part, a circulation opening passage 8 is formed, in which no side net 5 is arranged in the circumference of the vertically facing frames 2, 2. |
