Sea Turtle Bycatch and Entanglement: Welfare and Conservation Responses

Sea turtle bycatch in longlines, trawls, and gillnets causes injury, drowning, and death, making fishing gear modification and bycatch reduction one of the most urgent wildlife welfare priorities.

Key Facts

All seven sea turtle species are listed as Vulnerable, Endangered, or Critically Endangered under IUCN criteria
An estimated 250,000 sea turtles are caught accidentally in fishing gear each year globally
Longline fisheries using J-hooks and natural bait have the highest sea turtle capture rates; circle hooks significantly reduce bycatch
Gill nets cause drowning when turtles become entangled and cannot surface to breathe; acoustic pingers and net illumination reduce capture rates
Trawl fisheries in shrimp and other demersal fisheries have mandatory Turtle Excluder Devices (TEDs) in US waters
Entangled turtles often sustain severe flipper injuries from struggling, and hooks ingested during longline capture cause internal injury
Sea turtle bycatch reduction measures have demonstrably reduced mortality: TED mandates reduced loggerhead drowning by estimated 94% in US shrimp trawls
Stranded turtles recovered from bycatch events by rehabilitation centers face weeks of intensive care for injuries before potential release

Welfare Considerations

Sea turtle bycatch welfare is a two-level concern: the acute suffering of individual turtles caught, injured, and often drowned, and the population-level welfare impact of removing reproductive adults from already depleted populations. Bycatch mortality tends to target large, mature turtles that have survived decades of ocean life — their loss has disproportionate impact on population recovery. For individual turtles that survive bycatch events and reach rehabilitation centers, the welfare burden includes wound treatment, flipper amputation, and long recovery periods in artificial environments before release. Prevention through fishing gear modification is far better than rescue: circle hooks and TEDs work. The challenge is ensuring consistent adoption and compliance across international fisheries where enforcement is difficult.

What You Can Do

Choose seafood certified by programs that require bycatch reduction measures (MSC, Fair Trade Certified)
Ask seafood retailers about their supplier policies on sea turtle bycatch mitigation and TED compliance
Support sea turtle rescue and rehabilitation centers in your region that treat bycatch survivors
Advocate for international fishing agreements that require bycatch reduction gear in sea turtle migration corridors
Support US and international policies that maintain and strengthen TED requirements for trawl fisheries
Donate to organizations monitoring sea turtle bycatch and advocating for improved fishing gear standards
Reduce consumption of shrimp and other seafood categories with historically high sea turtle bycatch rates