👉 The gordioidea is a family of marine gastropod mollusks in the order Gastropoda, which includes many species that are commonly known as sea urchins. These mollusks are found in various habitats around the world and are often associated with coral reefs, seagrass beds, and mangrove forests. They have a wide range of shapes and sizes, with some species reaching lengths of up to 10 meters. The family gordioidea is known for its unique