NEW YORK (Reuters) - The carcass of a dolphin that died after becoming mired in a notoriously toxic New York City canal has been removed and will be sent for a necropsy, a marine research group said on Saturday. The animal, a common dolphin, was first spotted in Brooklyn's Gowanus Canal on Friday morning, where it was described as looking disoriented and unwell as it struggled to avoid getting bogged down in the canal's muddy floor. ...