08/28/2026
Humpback whales have been documented charging into orca hunts, sometimes helping animals from entirely different species escape.
What makes the behavior remarkable is who benefits.
A 2016 study compiled 115 humpback-orca interactions recorded worldwide from 1951 through 2012.
When humpbacks interacted with attacking mammal-eating orcas, 89 percent of identified prey were 10 species other than humpbacks.
They included gray whales, sea lions, seals, porpoises, a minke whale, and even an ocean sunfish.
In Antarctica, one humpback rolled beneath a hunted Weddell seal and lifted it onto its chest.
During another attack, five humpbacks converged on orcas hunting a gray whale mother and calf, which escaped.
Monterey Bay alone accounted for 48 recorded interactions.
Humpbacks can wield five-meter flippers weighing more than a ton against predators.
Scientists describe the behavior as possible mobbing, but its evolutionary motivation remains unresolved.
Whatever drives it, humpbacks sometimes alter another species’ chances of survival.