Overview
- Researchers published a peer‑reviewed description on July 23, 2026 of two filmed Gulf of California events in which one orca held a dead sharp‑tail sunfish while another accelerated and struck it, causing the carcass to fragment into thousands of pieces.
- The filmed sequence involved one whale stabilizing the sunfish by its fin and a second whale torpedoing into it at high speed, and observers report that juveniles ate the floating fragments while adults fed on the remaining body.
- Both recorded incidents — one in July 2024 and a second in September 2025 — show the sunfish were already dead before the ramming, which suggests the action is a prey‑processing technique rather than a killing method.
- Authors propose two leading functions: parental provisioning that creates manageable pieces for calves and social play or practice that supports learning and coordination, and they also raise a testable hypothesis that fragmentation disperses the sunfish’s capsule microbiome into the water.
- Documentation relied on partnerships among scientists, eco‑tour operators and citizen scientists and researchers say more high‑quality ID photos, systematic surveys and respectful distance rules for tourism are needed to determine how common the behavior is and whether it spreads culturally.