Dolphins help fishermen to catch fish

A visitor might stumble upon a strange sight in Laguna, Brazil, if they went down to the shore. Here, the local fishermen rely on dolphins to help them with their yearly fish catch. New research has found that just one local group of about 20 dolphins works with the fishermen, while the other local dolphins don't cooperate, finding other sources of food. The researchers aren't sure what separates these groups.

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