This is a co-operative feeding behavior of Humpback whales that is seen in very few places. We are lucky to have groups of whales in our area that have learned this unique method of feeding.
A group of whales working together will dive under schools of herring, one whale will swim in a circle while blowing bubbles under the herring. When the bubbles rise they form a net and scare the herring into a tight ball in the center. The whales then come up through the middle with their mouths open, capturing large amounts food.
An average group size is 5 to 8 animals but we have seen as many as 25 whales working together. While they are searching for their prey the whales communicate with each other with a series of calls similar to the whale songs you may have heard recorded in Hawaii. These usually culminate with one loud blast to frighten the herring just before the whales break the surface. We often drop a hydrophone over the side to listen in, adding to the excitement of seeing this amazing performance.
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