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An analysis is made of the catch, effort and catch per unit effort (CPUE) of the incidental capture of billfish and other species by longline vessels in eastern Venezuela. The information was based on fishing logbooks from 1986 to 2000. The fishing grounds were divided into two sectors according to the different hydrological regimes: the Caribbean Sea (11º17ºN, 61º75W) and the western Atlantic Ocean (5º17ºN, 50º60ºW). The number of vessels in the fleet increased from 9 to 41 units between 1986 and 1996.

Sea otters are caught and drowned in fishing pots and traps.  Live California sea otters were exposed to finfish traps, lobster traps, and mock Dungeness crab traps in captive trials.  Researchers found that the otters attempted to enter the circular and rectangular fyke openings and some became entrapped.  They determined that a 3x9 inch opening, rather than the standard 4x9 inch, would prevent bycatch of free-living otters, while retaining crab catch.  

The type (circle 18/0 0 degree offset and J-style 9/0 10 degree offset) and position of hooks in the water column were tested to determine the effects on catch rates and mortality of elasmobranchs.  Tests were conducted aboard pelagic and bottom longline vessels. CPUEs for blue, silky and oceanic whitetip sharks were significantly higher with circle hooks than with J-style hooks.

Small cetaceans are by-caught in salmon gillnet fisheries in British Columbia (BC) waters. In Canada, there is currently no generic calculation to identify when management action is necessary to reduce cetacean bycatch below sustainable limits.