Lt. Cmdr. Eric Purvis was killed in the crash late Tuesday night, along with four other crew members.
A special search and salvage team is now searching the waters off Coronado Islands for debris. Crews are searching using inflatable boats and a mini-submarine.
But the Coast Guard has suspended its search for two missing crew members, saying it's unlikely they could have survived this long.
Three bodies have been recovered.
The Seahawk chopper apparently crashed during a training exercise.