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. …

Dec 28, 2025 · Crabs, lobsters, shrimps, and wood lice are among the best-known crustaceans, but the group also includes an enormous variety of other forms without popular names.

What are Crustaceans? Crustaceans are invertebrate animals in the phylum Arthropoda, subphylum Crustacea, and include the barnacle, crab, crayfish, lobster, shrimp, water flea, and pill bug. Although …

Aug 26, 2025 · Crustaceans are a diverse group of invertebrates in the phylum Arthropoda. This group includes over 45,000 described species found globally in various aquatic environments, with a few …

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

Most crustaceans live in the ocean, and are one of the pillars of the global marine ecosystem. In much of the open ocean, the primary herbivores feeding on the phytoplankton are crustaceans.

Kingdom: Animalia Phylum: Arthropoda Class: Malacostraca - Members of this large class of crustaceans may be found in freshwater, saltwater or on land. The group includes sowbugs, crabs, …

The world is home to more than 42,000 species of crustaceans, ranging in size from giant spider crabs to microscopic zooplankton. Although most of them are marine, several thousand occur in almost …

Dec 28, 2025 · The most typical larva is called a nauplius. Crustaceans play many roles in aquatic ecosystems. The basic crustacean body consists of somites, acron, telson, appendages, carapace, …

Crustaceans represent a vast group of invertebrate animals, comprising one of the primary divisions within the phylum Arthropoda. Defined by their segmented bodies, jointed appendages, and hard …