Overview
- Scientists published a peer‑reviewed description of the behavior after two independent filmed events in the Gulf of California showed one orca holding a dead sharptail sunfish while another rammed it at high speed, causing the carcass to fragment into thousands of pieces.
- The incidents, recorded in July 2024 and again in September 2025, both show the sunfish were already dead before the crash, which suggests ramming is a food‑processing technique rather than a killing method.
- Observers saw juvenile whales feed on the small floating fragments while adults ate larger portions of the carcass, supporting the hypothesis that the technique makes food more manageable for younger animals.
- Authors note the behavior is previously undescribed for orcas and hypothesize roles including parental provisioning, social play, or social learning, but they emphasize these functions remain unproven without more data.
- Researchers call for more high‑quality video and identification photos of dorsal fins and eye patches to track which individuals use the tactic, measure how common it is, and test possible ecological effects such as dispersion of the sunfish’s collagenous capsule microbiome.