Bycatch Mitigation Fact-Sheet 6. Demersal Longline: Underwater setting chute. English, Korean, Portuguese, Simplified & Traditional Chinese, Spanish.

Seabirds are at greatest risk of becoming hooked
and drowned when baited hooks are at, or within a
few metres of, the surface. In theory, setting hooks
below the surface of the water should greatly
reduce the likelihood of catching seabirds. It should
be noted that this is currently a secondary measure,
as underwater setting cannot be used in isolation to
reduce seabird bycatch.