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  1. Crustacean - Wikipedia

    Most crustaceans are free-living aquatic animals, but some are terrestrial (e.g. woodlice, sandhoppers), some are parasitic (e.g. Rhizocephala, fish lice, tongue worms) and some are sessile (e.g. …

  2. Crustaceans – Illinois Natural History Survey

    Understanding their role in the natural world is of critical importance. INHS crustacean biologists investigate the distribution, status, phylogenetic relationships, ecology, behavior, and physiology of …

  3. Crustacean | Definition, Characteristics, Evolution, & Facts | Britannica

    Dec 12, 2025 · crustacean, any member of the subphylum Crustacea (phylum Arthropoda), a group of invertebrate animals consisting of some 45,000 species distributed worldwide. Crabs, lobsters, …

  4. What Is a Crustacean? Defining Characteristics & Examples

    Crustaceans are a large, diverse group of invertebrate animals within the phylum Arthropoda. Primarily aquatic, these creatures are found globally in various habitats and are recognized by their hard …

  5. What are Crustaceans? – INHS Crustacean Collection

    Crustaceans have evolved a variety of specialized body forms and behaviors to cope with both aquatic and terrestrial environments; however, all crustaceans share several characteristics: a hard …

  6. Crustacean - Simple English Wikipedia, the free encyclopedia

    Crustaceans include crabs, lobsters, crayfish, shrimp, krill and barnacles. They are relatives of insects. If the Arthropods are regarded as a superphylum, then the insects and crustacea would be phyla (see …

  7. Crustacean - Definition, Types, List, Anatomy, and Picture

    May 15, 2024 · What is a crustacean in biology. What does it eat. Learn its examples, including habitat, organ systems, reproduction, and life cycle with images.

  8. Crustacean - New World Encyclopedia

    Crustaceans (subphylum Crustacea) comprise the group of arthropods (phylum Arthropoda) that includes the familiar crabs, lobsters, shrimps, barnacles, copepods, krill, water fleas, and crayfish.

  9. Crustacea (shrimps, crabs, lobsters, water fleas, and relatives ...

    Most crustaceans are free-living, but some are sessile and a few are even parasitic. Most use their maxillae and mandibles to take in food. The walking legs, including specialized chelipeds, may be …

  10. Crustaceans: Species, Characteristics, and Diet - ThoughtCo

    Dec 13, 2019 · Crustaceans include commonly-known marine life such as crabs, lobsters, barnacles, and shrimp. These animals are in the Phylum Arthropoda (the same phylum as insects) and …