A Coronado surfer recorded an encounter with a 20-foot long gray whale Tuesday morning.
Daron Case said the whale came within a few feet of him and his surf buddies off Silver Strand State Beach.
"It swam right through all the surfers," Case said. "I was able to dip my GoPro under the water and capture some pretty amazing footage. I was pretty stoked because the water clarity this morning was like Hawaii."
But his joy at coming within arms-length of the majestic marine mammal is tempered by concerns it may be sick. Case couldn't help but notice the whale's lethargic behavior:
"It did have a lot of barnacles and it looked very skinny," he said.
Researchers at the Scripps Institute of Oceanography also told 10News the whale appeared to be thin and unhealthy. They said all those old barnacles could be an indication that the whale is old, or that it could be in poor health.