From spears and the invention of the wheel to smartphones and robots, human societies have been building and using tools from the beginning. Human tool use has served to conquer new environments, increase communication, and ultimately alter the course of human evolution.

But humans are not alone in the use of tools. Our new study, published in the journal Marine Mammal Science, shows dolphins can use seashells to help them hunt for fish. And they might be learning this clever tool use from their mothers.

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