Last November, Canadian lobsterman Robin Russell was pulling up his catch when he found a unicorn of sorts: Peeking out among the mottled burnt orange and brown was a pastel lobster, sporting a shell of baby blue, pink, and periwinkle.

Initially unsure what to do with the rainbow-clad critter, Russell eventually decided to donate the lobster—dubbed “Lucky”—to the Huntsman Marine Science Centre in Saint Andrews, New Brunswick. But recently, Russell’s Instagram post featuring Lucky’s unusual coloration resurfaced and is making waves online.

Though there aren’t firm stats on the true abundance, the lobster is certainly a rare find. Similarly colored creatures only turn up once every four to five years, says Michael Tlusty, associate professor of sustainability and food