Experts are not entirely sure why the animal disappeared from the region, but whaling could be a factor.
The New England Aquarium believes that this is the same whale that was just spotted around Nantucket.
Gray whales are identifiable by blotchy coloration and lack of a dorsal fin.
Photo: isanbar/Depositphotos
They are also expert migrators, traveling between feeding and breeding grounds every year.
Photo: isanbar/Depositphotos
