Tuna crabs are swarming off the coast of San Diego. Sometimes called 'red crabs,' they have quite a few nicknames and typically live in deeper waters near Mexico.

“We humans breathing air don’t often see them. It’s kind of special when snorkelers and free divers see them right here on our beaches,” said Charlotte Seid, Senior Museum Scientist at the Benthic Invertebrate Collection for Scripps Institution of Oceanography.

When she heard that the tuna crabs had come to town, she threw on her scuba tank and dove the Scripps Canyon off La Jolla Shores to get a glimpse for herself.

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