Diadema antillarum, also known as the lime urchin, black sea urchin, Grabaskey's bane or the long-spined sea urchin, is a species of sea urchin in the Family Diadematidae.
Wikipedia

Brazil, a vast South American country, stretches from the Amazon Basin in the north to vineyards and massive Iguaçu Falls in the south. Rio de Janeiro, symbolized by its 38m Christ the Redeemer statue atop Mount Corcovado, is famed for its busy Copacabana and Ipanema beaches as well as its enormous, raucous Carnaval festival, featuring parade floats, flamboyant costumes, and samba music and dance.

Wikipedia