Mollusks are a diverse group of animals that include creatures like snails, clams, and octopuses. They are known for their soft bodies, which are often protected by a hard shell made of calcium carbonate. Mollusks can be found in various environments, from oceans and rivers to forests and gardens. They play important roles in ecosystems, serving as both prey and predators. These animals have unique features, such as a muscular foot for movement and a mantle that produces their shells. Some mollusks, like squid and cuttlefish, are highly intelligent and can change color to blend into their surroundings. Overall, mollusks are fascinating creatures with a wide range of adaptations.