To provide a net and the like in a cultivating pond for preventing adhesion of microorganism, acorn barnacle, pearl oyster, wakame, etc.
A tuna cultivating net is manufactured as a knotless fishing net aiming at cultivating tuna using conductive polyethylene fiber. Weak direct current (DC) or alternate current (AC) is applied to the cultivating net aiming at cultivating tuna made of conductive polyethylene fiber to electrolyze sea water on the surface of the cultivating net where tuna is cultivated and generate highly toxic calcium hypochlorite on the surface of the cultivating net where tuna is cultivated so as to prevent microorganism, acorn barnacle, pearl oyster, wakame, etc. that adhere to and grow on the surface of the net 1 in a cultivating pond, which is the cultivating net where tuna is cultivated, from adhering, developing and growing.
SEIKE KAZUNORI
SAKAMOTO TOKIHIRO
