Television video showed the whale swimming around wood pillars and occasionally coming up for air at the marina in the 300 block of Alton Road.
The young whale appeared to be injured. But scientists aren't sure yet what caused the injuries or how badly the whale was hurt, said Shelley Dawicki, a spokeswoman for the National Oceanic and Atmospheric Administration fisheries. The calf's mother hasn't been seen, Dawicki said.
Two members of NOAA's marine animal stranding network are at the marina, Dawicki said, and determining the best steps to take.The Coast Guard has set up a safety zone around the whale and told boaters over the radio to stay out of the area around the whale, Tippets said.