There is one main binding, multiyear conservation measure covering tropical tuna stocks (bigeye, skipjack, and yellowfin) that currently includes, among other things, provisions for a 62-day full closure for purse seine fishing, a two-month closure in a specific area of the Convention Area for purse seine fishing, and bigeye catch limits for longline vessels.

Regarding seabirds, IATTC requires the use of two different seabird bycatch mitigation measures, and fishers should also make efforts to ensure that any birds captured are released alive and in the best condition possible. This applies to longline vessels in the shaded area in the following map.

For sea turtles, longline skippers must ensure that their vessel has on board the right equipment to promptly release any incidentally caught animals (e.g., dehookers, line cutters, and scoop nets). Fishermen must also bring aboard, if practicable, any comatose or inactive turtle as soon as possible and foster recovery, including resuscitation, before returning it to the water.