crabs invertebrates

Is A Crustacean A Vertebrate Or An Invertebrate? Crustacean, any member of the subphylum Crustacea (phylum Arthropoda), a group of invertebrate animals consisting of some 45,000 species distributed worldwide. Is a crustacean a vertebrate? Invertebrates come in many shapes and sizes and include insects, spiders and scorpions, crustaceans, such as crabs and lobsters, slugs and