A rare and seasonally-colored lobster is joining spiders, bats, and even some oozing fungi as some of nature’s best Halloween ambassadors. Meet Jackie (short for jack-o’-lantern), a rare orange and black lobster making her debut at Northeastern University’s Marine Science Center in Nahant, Massachusetts. This makes Jackie even more rare than the center’s other recent star, Neptune the blue lobster. More calico lobsters may be born than live long enough to be discovered, since their unusual coloring may make them stand out to prey. UPDATE October 15 7:16 a.m. EDT: An earlier version of this story said that the chances of finding a calico lobster are one-in-20 million.