👉 Succineoidea is a group of marine invertebrates that includes a variety of species, including sea cucumbers, snails, and clams, commonly known as sea urchins. These organisms are characterized by their unique adaptations for underwater life, including the ability to breathe through gills, which are found on the surface but not visible from above. The term "sucineoidea" refers to a group of marine invertebrates that includes a wide range of species
