From Yahoo News:
This May 9, 2012 photo provided by the New England Aquarium in Boston shows a rare calico lobster that could be a 1-in-30 million, according to experts. The lobster, discovered by Jasper White’s Summer Shack and caught off Winter Harbor, Maine, is being held at the New England Aquarium for the Biomes Marine Biology Center in Rhode Island. The lobster is dark with bright orange and yellow spots. (AP Photo/New England Aquarium, Tony LaCasse)
I have no idea what mutation this is, if it’s indeed a mutation (I suspect it is). One possibility is suggested here.
h/t: Matthew Cobb