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Orcas in Gulf of California Hunt Young Great Whites With Flipping Technique

Researchers say the Moctezuma pod exploits a paralysis reflex to extract sharks’ livers, underscoring learned, coordinated predation.

Overview

  • The peer-reviewed study in Frontiers in Marine Science documents two hunts that resulted in three juvenile great white sharks killed in the Gulf of California.
  • Photo-identification of dorsal fins tied the animals to the Moctezuma pod, a group previously observed hunting rays and other shark species in the region.
  • In each event, five orcas herded a juvenile to the surface, flipped it onto its back to induce tonic immobility, then opened the abdomen to remove the nutrient-rich liver.
  • The juveniles measured about two meters in length, compared with roughly four-meter females and a six-meter male within the hunting group.
  • Researchers will continue monitoring to determine how frequently this tactic occurs, whether juveniles are preferentially targeted, and if similar behavior is found in other areas.