Dozens of people called the police in Wareham earlier this week when they spotted the ocean sunfish, thinking it was a shark or a seal, according to the Cape Cod Times.
The Wareham Department of Natural Resources investigated after being told about the concerned calls.
Officials found the sunfish — which is formally known as a Mola and can grow up to 11 feet long and can weigh as much as 5,000 pounds — to being doing just fine.
"We have checked on it, and it is doing normal sunfish activities," the department said on Facebook. "Its swimming. It is not stranded or suffering. The sunfish is FINE. Dont be jealous just because its not swimming weather anymore!"