UMaine News, February 17, 2017 Research professor Rick Wahle and graduate student Carl Huntsberger are testing a technique at the University of Maine Darling Marine Center to determine the age of lobsters. Unlike fish, mollusks and trees, Wahle says lobsters and other crustaceans molt — or cast off their skeletons thereby discarding external signs of growth. read more DMC researchers test technique to determine lobster’s age