New data shows that great white sharks are spending more time in the chilly waters off New England and Atlantic Canada.

Scientists link expanded shark sightings in some New England waters to increased availability of the seals that the sharks hunt.

Officials in Scarborough informed the public of a "potential shark sighting in local waters, specifically in the area off the south tip of Richmond Island, Crescent Beach State Park, Higgins Beach and Pine Point Beach" located along the Maine coast. All beaches are within a half-hour's drive of Portland.