A group of lobster fishermen can sue one of the world’s largest seafood watchdog groups for defamation, a federal court has ruled, over a report that described Maine lobster as an unwise choice for consumers. The threat to a rare whale species from getting tangled in fishing gear has prompted Monterey Bay Aquarium in California to caution against eating a variety of lobster that New England fishermen have harvested for centuries. Seafood Watch, a conservation program operated by the aquarium, placed lobster from the U.S. and Canada on its do-not-eat “red list” in 2022. Some retailers pulled lobster from stores...