Crustaceans

Crustaceans are a diverse group of arthropods characterized by their hard, segmented exoskeleton, which they molt to grow. They typically have multiple pairs of limbs, including claws or pincer-like appendages, and live mainly in aquatic environments like oceans, rivers, and lakes. Examples include crabs, lobsters, shrimp, and barnacles. Their exoskeleton provides protection and support, and they play crucial roles in ecosystems as predators, prey, and scavengers. Crustaceans develop through various life stages and many are commercially important for food, jewelry, and scientific research.