👉 Lathromeroidea is a group of marine invertebrates that includes a number of different species, including oysters, clams, and sponges. These organisms are characterized by their unique adaptation to living environments with both saltwater and freshwater habitats. They have a hard outer shell made up of calcium carbonate, which helps them withstand the stresses of seawater. The term "lathromeroidea" is often used in marine biology to describe these fascinating creatures.