The lobster caught by Alan Robinson in Dyer’s Bay is a typical mottled green on one side; the other is a shade of orange that looks cooked.
Robinson, of Steuben, donated the lobster to the Mount Desert Oceanarium. Staff members say the odds or finding a half-and-half lobster are 1 in 50 million to 100 million. By comparison, the odds of finding a blue lobster are about 1 in a million.
Bette Spurling, who works at the oceanarium, said lobster shells are usually a blend of the three primary colors: red, yellow and blue. Those colors mix to form the greenish-brown color of most lobsters. This lobster, though, has no blue in half of its shell, she said.