A 13-foot pilot whale washed up on Lucy Vincent Beach in Chilmark over the long weekend. Adam Kennedy, a senior biologist at the New England Aquarium, said the whale was likely dead when it washed ashore.

Mr. Kennedy said the animal was discovered half-buried in the sand by the tides last Friday. Only its head and front fin were visible; the rest of its body was obscured. The conditions were “very unusual,” Mr. Kennedy said.

A Black-fish of the whale species, was found run ashore in the Menemsha Creek at Chilmark, on Sunday last, at a depth of about three feet of water. He was nineteen feet long and is expected to yield about three barrels of oil.