# Orcas Tear Sunfish Apart, and Scientists Don’t Know Why

Researchers observed a group of orcas attacking and shredding a sunfish into pieces, an unusual behavior they cannot yet explain. The incident adds to a growing list of puzzling interactions between killer whales and other marine species. Scientists are studying whether this is play, hunting practice, or something else.

**Importance:** 2/5

## Sources

### Science
- [Nature](https://www.nature.com/articles/d41586-026-02419-2) — 2026-07-31