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Orcas ram sunfish so hard prey explodes, may be playing

natureJul 23, 2026281,005

Researchers filmed orcas in the Gulf of California ramming giant sunfish so forcefully the prey disintegrated into a cloud of tissue. Dr Kathryn Ayres of Beneath The Waves recorded the first event on a GoPro in July 2024, capturing a female orca gripping a dead sunfish tail while an adult male accelerated into it, producing an audible crunch and a plume of white fragments. Erick Higuera of Conexiones Terramar, co-author of the research, described the impact as an overwhelming acoustic thud and explosion of tissue. A separate tourism-operator recording in September 2025 showed a similar sequence: one orca holding a carcass while another executed a high-speed ram that broke the fish into thousands of pieces. Observers filmed a juvenile eating the small fragments while adults fed on the main carcass. Scientists who published the findings in Frontiers in Ethology say the behaviour could be a way to break tough sunfish into bite-size pieces for juveniles or it could be social play, noting orcas' known repertoire of playful fads. The reports note increased underwater cameras from eco-tour operators are revealing new behaviours but also raising concerns about wildlife tourism, and Mexico introduced new regulations on swimming with orcas last year.

Mindy Weisberger
@laminda.bsky.social

Exactly how hard do you have to ram a sunfish to make it explode into a thousand pieces, like a watermelon hit by a freight train? Orcas are known for ramming prey (and sometimes yachts) but this is the first evidence of them doing it with so much force that the target disintegrates on impact 🧪

8644d ago
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