Updated

Updated · CNN · Jul 23

Orcas Explode 4,000-Pound Sunfish in 2 Newly Filmed Collaborative Ramming Attacks

Updated

Updated · CNN · Jul 23

Orcas Explode 4,000-Pound Sunfish in 2 Newly Filmed Collaborative Ramming Attacks

Q: What incredible force lets an orca shatter a 2,000-pound sunfish with a single high-speed ram?

It is the orca’s high-impact ramming force — a fast, deliberate body strike powered by one of the ocean’s most muscular predators. The new *Frontiers in Ethology* study describes a “ram-to-fragment” tactic in which one adult orca holds a sharp-tail sunfish while another accelerates and slams into it at speed. The impact is strong enough to break the carcass apart, sending edible pieces to the surface for juveniles to eat. Researchers filmed this behavior in the Gulf of California in 2024 and 2025. What makes the force so effective is the combination of mass, speed and precision. Orcas are large, dense-bodied animals capable of explosive acceleration, so a direct ram transfers enormous kinetic energy into the sunfish. That matters because ocean sunfish can weigh more than 2,000 pounds and have thick, tough skin that makes them difficult for predators to tear apart by biting alone. Marine biologist Erick Higuera, who first observed the behavior in 2021, described it as “violent” but “highly calculated.” The study suggests the strike is not random aggression but a specialized hunting solution to a difficult prey item. Researchers also noted coordinated roles within the pod, comparing the sequence to “soccer,” and said the behavior may help feed or train younger orcas. So the “incredible force” is not a mysterious biological weapon, but a precisely timed, high-speed collision delivered by a powerful adult orca.

3 articles · Updated · CNN · Jul 23

Two videos from Mexico in 2024 and 2025 captured orcas working in pairs to hold sharptail sunfish, then slam them hard enough to burst the fish into fragments, researchers reported in Frontiers in Ethology.
The footage shows one orca gripping the tail while another accelerates into the prey; calves and juveniles then feed on drifting pieces, suggesting the tactic may help share large kills.
Kathryn Ayres said at least one sunfish had already lost its nutrient-rich internal organs before impact, raising the possibility that the explosive ramming was not strictly for feeding and may have been play.
Sharptail sunfish can weigh more than 4,000 pounds and reach 10 feet, and outside experts said this high-impact fragmentation had not been documented before among orcas' already specialized hunting behaviors.