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The shell length of Nucella lapillus, known more commonly as the Atlantic dogwhelk, has increased dramatically over the last century, a change only recently discovered. (Credit: Manfred Heyde/Wikimedia Commons)
U. PENN (US)—The Atlantic dogwhelk is one of the best known and most widely studied organisms in the North Atlantic Ocean. Yet until now, no one had noticed that over the past century shell lengths of these sea snails have increased in size by an average of 22.6 percent. Continue…
