Dolphin lost n Boston Harbor

A wayward dolphin has been spotted deep inside Boston Harbor, swimming up the Fore River.
Biologists say the common dolphin appears healthy, if a little thin, the Boston Globe reported. But they worry about how the dolphin got separated from its pod. Dolphins are extremely social animals.

A team from the New England Aquarium observed the dolphin Friday from a Braintree Yacht Club float.

Biologists say dolphins are fairly common in the harbor -- the last one was in 2004. But getting into the Fore River is unusual.