While many visitors to Alaska have the opportunity to see whales during summer, not everyone gets to see them bubble feeding up close.
Bubble net feeding by humpbacks involves a school of fish being encircled by bubbles blown by the whales. The shrinking column of bubbles forces the fish to the surface, and the whales then break through the bubbles and swallow large numbers of fish at once.
Juan Christensen captured this phenomenon from the dock at Clover Pass Resort last summer. Mark Andrew of Oasis Alaska Charters says, "There's something about that place the whales love. Maybe all the fish cleaning attracts the fish they like to eat?"
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