The San Diego based Marine lost at sea has been identified as 21-year-old lance corporal Armando Ortiz Canseco.
The Marine went missing off the Southern California coast early Thursday during training exercises and was declared dead Friday, although his body has not been recovered.
Canseco was from Minnesota and was serving aboard the USS Anchorage, an amphibious transport dock ship.
The circumstances surrounding his death are under investigation.
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