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Red crabs invade San Diego shores

Massive numbers of bright red tuna crabs have washed up on San Diego beaches during the last several weeks.

Pleuroncodes planipes (also known as tuna crab or pelagic red crab), have been seen in droves along the San Diego coastline, from Ocean Beach to La Jolla.

“Typically such strandings of these species in large numbers are due to warm water intrusions,” said Linsey Sala, collection manager for the Pelagic Invertebrates Collection at Scripps Institution of Oceanography, UC San Diego.