Sea Turtle Bycatch Welfare: Suffering in Commercial Fishing Gear

Sea turtles from all seven species are frequently caught as bycatch in commercial fishing operations, suffering drowning, injury, and death in gear designed for other species. Welfare-focused interventions are reducing but not eliminating this toll.

Key Facts

All seven sea turtle species are listed as vulnerable, endangered, or critically endangered
An estimated 250,000 sea turtles are caught annually as bycatch in longline fisheries
Shrimp trawling was historically the largest source of sea turtle bycatch before TED (turtle excluder device) requirements
Loggerhead and leatherback turtles are particularly vulnerable to longline fishing
Sea turtles can drown in gill nets and trawls within minutes, but may survive brief entrapments
Turtle Excluder Devices (TEDs) are mandatory in US shrimp trawls and have significantly reduced mortality
Circle hooks and bait changes in longline fisheries reduce sea turtle catch rates by up to 90%

Welfare Considerations

Sea turtles caught in fishing gear experience suffering that ranges from brief disorientation to prolonged drowning and fatal injury. Turtles caught on longline hooks experience hook penetration injury, may struggle on lines for hours before retrieval, and suffer physiological stress from capture. Those caught in trawl nets experience the gradual hypoxia of drowning if time underwater exceeds their breath-holding capacity. Turtles that are alive when retrieved can survive with proper dehooking and resuscitation, but the stress of capture and handling adds to welfare burden. The development of effective bycatch reduction measures - TEDs, circle hooks, time-area closures - shows that welfare improvement is achievable, but implementation requires regulatory enforcement.

What You Can Do

Choose seafood certified by sustainable fisheries programs that require sea turtle bycatch monitoring
Support organizations advocating for mandatory turtle excluder device requirements globally
Engage seafood retailers about their supplier bycatch reduction commitments
Donate to sea turtle research and rehabilitation organizations
Advocate for international fisheries agreements that require bycatch reduction technology
Support observer programs on fishing vessels that document and report bycatch mortality