Crustaceans, such as crabs, lobsters, and shrimp, have developed various adaptations to thrive in diverse environments. Their hard exoskeletons provide protection from predators and environmental stressors. Additionally, many crustaceans possess specialized appendages, like pincers or swimming legs, which help them capture food and navigate through water. Another key adaptation is their ability to breathe through gills, allowing them to extract oxygen from water. Some crustaceans can also tolerate changes in salinity, enabling them to inhabit both marine and freshwater ecosystems. These adaptations contribute to their success in a wide range of habitats around the world.