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.