Humpbacks Block Killer Whale Feeding Frenzy in Wild Video

A pod of killer whales is stalking baby grey whales off Monterey Bay in California, but a patrolling group of humpback whales is doing everything in its power to foil the killer whales' attacks. A bounty of young, harmless grey whale calves is an irresistible lure for the top ocean-predators. Killer whales (or orcas) can always be found in the area off Monterey, but this year has been particularly grim for the killer whales' prey.