Orcas Ram-to-Fragment Sunfish (Gulf of California)

Researchers documented a novel ‘ram-to-fragment’ feeding tactic by Gulf of California orcas, in which one orca holds a sunfish by the tail and another slams it at high speed, exploding the fish into fragments. The incidents, recorded in 2024 and 2025 and described in Frontiers in Ethology, may aid younger orcas in feeding or could be a form of play or social behavior, with adults consuming the remaining pieces and juveniles scavenging the debris. Sunfish weigh up to 2,000 kilograms and are often targeted at the surface, where the smashing technique could help access nutrients or loosen microbiome-rich tissue. Scientists describe the behavior as a rare, deliberate processing method distinct from a killing blow, and note that it has been observed in at least two separate events. Related footage also shows other orca predation, including coordinated hunts of dolphins off Monterey Bay, underscoring the species’ sophisticated and diverse hunting strategies. The observations suggest social and nutritional benefits within pods, evidenced by consistent sharing with calves and juveniles.