Warming waters in Casco Bay are driving herring farther from shore

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Warming waters in Casco Bay are driving herring farther from shore

The Gulf of Maine is warming three times faster than the average global ocean, driving some cold-water species like Atlantic herring — the preferred lobster bait — farther away from its shoreline spawning habitat earlier than usual and attracting species from warmer southern waters, including blue crab and black sea bass, a new survey found. The warmth is stressing some of Maine’s keystone fisheries, according to the Gulf of Maine Research Insti…