Commercial fishing remains an important Maine industry. Fishing is no longer the hazardous producer of widows and orphans as in sailing days, but today's practitioners remain salty, colorful characters. Most prized by them is the lobster, but scallops, crabs, and several fish are caught commercially. At low tide clam diggers often work the flats with their short rakes. Boat building continues on the island and Schoodic Peninsula. Lobsters feed on snails, clams, mussels, dead fish and other organisms. Their large claw cracks shellfish and the other claw tears prey apart for eating. They dart backwards powered by abdomen and tail, but they also clamber over rocks on their four pairs of legs. They periodically shed and re-grow the tough outer skeleton "shell". Lobsters caught today usually weigh 1.5 pounds, but deeper water specimens can exceed 40 pounds. Brightly-colored buoys mark the lobster traps. Their individual colors are registered with the state.