Recently, biologist Nan Hauser was snorkeling in the Cook Islands in the South Pacific, when she was approached by a humpback whale. The whale nudged her forward with its closed mouth, tucked her under its pectoral fin, and even maneuvered her out of the water with its back. Hauser was initially frightened and confused by the humpback’s behavior. Only when she got out of the water did she see a large tiger shark on the far side of the whale. Hauser concluded that the whale was attempting to protect her from the shark.
While her conclusion might initially sound far-fetched, for at least the last sixty years, scientists have observed, without quite understanding what they were seeing, a series of strange and stunning events — humpback whales appearing to launch coordinated rescue missions to prevent seals and other whales from being attacked by orcas. Hauser’s experience may be just another form of this not well-understood humpback behavior.