BOSTON (AP) — Fisherman Lou Williams sees plenty of harbor porpoises, usually swimming in small pods well away from his boat, unlike the herds of lookalike dolphins that get close enough to ride his vessel's wake. A place Williams doesn't see many porpoises is his nets. "It's a rare occasion," said Williams, 55, who fishes out of Gloucester. "I don't think more than a couple this year." But federal regulators say far too many porpoises in the Gulf of Maine are drowning in fishing gear, specifically the stationary nets that Williams and other fishermen use, called gillnets. The estimated fatalities...