👉 Strigeoidea is a class of crustaceans, including the common shrimp, oysters, clams, and many other marine animals. These organisms play crucial roles in ecosystems by providing food and shelter for many species, and they are also essential components of the freshwater ecosystem as well. Strigeoidean crabs, for example, are known to be important predators of fish species, which can lead to a decline in their populations due to overfishing.