Body structure of a typical crustacean – krill The body of a crustacean is composed of segments, which are grouped into three regions: the cephalon or head, [6] the pereon or thorax, [7] and the pleon or …

Dec 28, 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, …

Oct 5, 2022 · Crustaceans are a large, diverse group of invertebrates of the phylum Arthropoda, whose classification also includes spiders, mites, scorpions and insects. Scientists believe that the number …

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 …

4 days ago · The more than 50,000 crustacean species are generally divided into several major groups, including Malacostraca, Maxillopoda, and Branchiopoda. Malacostraca is the largest and most …

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

Nov 25, 2019 · A crustacean is an invertebrate animal with a hard exoskeleton, segmented body and jointed legs. Most crustaceans are fully aquatic, although some, including many crabs, are semi …

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.

In fact, body form is so varied throughout the crustacean groups that the only feature all crustaceans share is the possession of two pairs of antennae at some stage of their life cycle. Their colorful …

You may know that crustaceans are invertebrates that are a part of the subphylum Crustacea, but there are many interesting facts about each type of crustacean.