👉 Spongiobranchae are a group of marine animals that include sponges, bristles, and other structures that resemble the internal organs of other organisms. These animals are characterized by their unique structure known as the "sponge spine," which is composed of an external sponge shell surrounded by a network of internal tubules that allow for gas exchange. Spongiobranchae play crucial roles in maintaining homeostasis and regulating water balance, as they can be used to filter
