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Experiments were conducted aboard pelagic longline vessels in the western North Pacific to determine the effectivness of paired tori lines in reducing seabird bycatch.  Paired tori lines (PT) were compared against single tori lines (ST) during these tests.  The most abundant species of bird attacking longlines was the Laysan albatross (90.2%).  There was a significant difference in the mean number of albatross and shearwater birds between ST and PT deployments, with the mean number of birds being lower with PT deployments.

Experiments were conducted at sea to determine the ability of a "topless" shrimp trawl to reduce bycatch of Atlantic herring.  The "topless" effect was created by removing the square and the top part of the section after the square on the trawl.  At-sea trials resulted in a reduction of Atlantic herring bycatch by an average of 86.6% and produced an increase of 13.5% in pink shrimp catch.

Two types of longline sets, night and day, were evaluated for differences in catch composition in Seychelles waters.  Night sets were set at dusk and retrieved at dawn and used shallow baskets targeting swordfish, while day sets were set at dawn and retrieved at dusk and used shallow and deep baskets to target tuna.  The majority (75%) of species, both bycatch and market, were caught during day sets. The proportion of bycatch to target species decreased with depth.