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Bubble Print
This is a "bubble print," the clue that a whale is blowing bubbles by exhaling under the water. Why would a whale do that? Was it startled by something? Is it a greeting or a warning? We can't know the answer, but it's fun to think about. Most of the time we only see the small part of a whale's life that is happening at the surface of their watery world!

Bubble print made by gray whale

Image: Caroline Armon