Killer whale bites and appetites

Berta, A., Kienle, S. S., & Lanzetti, A. (2022). Evolution: Killer whale bites and appetites. Current Biology, 32, R375-R377.

SUMMARY

A newly discovered fossil dolphin shows that modern killer and false-killer whales evolved from fish-eating ancestors. While today both species occasionally feed on large warm-blooded prey, including seals and other whales, this diet specialization has evolved only recently.