The world's biggest shark species usually filter feeds, passively gathering krill and other plankton while swimming through the water. But new footage shows something entirely different.
A whale shark has been filmed appearing to feed by scrounging around on the bottom of the ocean — the first time this behavior has ever been documented in this giant fish.
The whale shark was filmed near La Paz, Mexico, a coastal town in southern Baja California that's known as a whale shark hotspot. Some of the local guides who take tourists out to see the sharks have agreed to share videos of any unusual whale shark behaviors with a local shark research organization, Gayford said. This is how he and his colleague first got a hold of this new footage. They published a research note about the observation on May 21 in the Journal of Fish Biology.
Although this kind of bottom-feeding behavior hasn't been documented in whale sharks before now, it isn't entirely unexpected, Mark Meekan, a marine biologist at the University of Western Australia who was not involved in the new paper, told Live Science.
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