Trap Fishing
抄録
It is said that the demersal resources in coastal waters, particularly those in shallow waters and in flat sea-bottom areas, have already been over exploited. However, we can safely assume that there are many areas, even in coastal waters, where these resources are almost untouched because the excessive depth of water or rough sea bottom make the operation of trawl and gill net gear too difficult. In such areas demersal fishing could most profitably be done by trapping. Fishing by traps is also convenient because it allows even very small vessels to operate at fishing grounds where water is deep or the bottom is rough.