Jenny Peterson, a 201 Market employee, holds a rare calico lobster at the Skowhegan business on Thursday. Owner Chris Foster said the lobster is not for sale and he’ll probably donate it to an aquarium.

A rare calico lobster, at left, beside a normal lobster at 201 Market store in Skowhegan on Thursday.

"Little Boy Blue," a rare blue lobster, is held by waitress Melissa Hamilton at Becky's Diner In Portland.