In the case of Chungnam (A) for octopus long-line fishing, the main line uses PP with a diameter of 3.3mm, and the branch lines use PP with a diameter of 1.3mm. The branch line length is approximately 70cm, with branch line intervals of about 70cm. In the case of Jeonnam (B), the main line uses PP with a diameter of 3.8mm, and the branch lines primarily use fishing line No. 60. The branch line length is approximately 47cm, with branch line intervals of about 62cm. In waters less than 10m deep, fishing is done by tying live stone crabs or blue crabs to plastic poles with rubber bands. In Chungnam (A), they are caught on hooks without barbs at the pole's end, while in Jeonnam (B), the plastic pole's end has