Description: English: Panulirus argus (Latreille, 1804) - Caribbean spiny lobster in the Caymans. (photo provided by Miranda Manross) The crustaceans are a large group of arthropods that inhabit marine, marginal marine, freshwater, and terrestrial habitats. The crustaceans include crabs, lobsters, shrimp, crayfish, barnacles, ostracods, and other organisms. The oldest fossil crustaceans are in the Cambrian. The group experienced a significant radiation in the oceans during the Mesozoic Marine Revolution. Classification: Animalia, Arthropoda, Crustacea, Decapoda, Panuliridae Locality: Grand Cayman Island, south of Cuba, northwestern Caribbean Sea See info. at: en.wikipedia.org/wiki/Panulirus_argus. Date: 30 November 1899. Source:
https://www.flickr.com/photos/47445767@N05/50399464341/. Author: James St. John.