Interesting work here on feeding in humpback whales from David Wiley and others. While the bubble feeding behavior of humpbacks is well. Wiley and his coworkers used tags to record depth and orientation of whales below the surface. Their results show that the behavior is more complex than previously known. The whales were seen to swim upward in what the researchers dubbed a "double loop." In this complex behavior, humpbacks make a spiral loop upwards that concentrates fish in the center of the ring, slap their flukes on the surface, and then make a second upward lunge with their mouths open to capture their prey. Wiley and his coworkers also found that the whales work in teams, but may steal the prey from bubble nets of other whales.
Check out humpback's bubble feeding here...
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