Crustacea, a diverse and fascinating subphylum within the phylum Arthropoda, encompasses a wide array of aquatic organisms, including crabs, lobsters, shrimp, and barnacles. This group is characterized by its segmented body structure, jointed appendages, and a hard exoskeleton made primarily of chitin. Crustaceans are predominantly found in marine environments, although many species have adapted to freshwater and terrestrial habitats. Their […]
