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.