"Hexactinellids" Natural Recordings by Native Speakers
The term "hexactinellids" refers to a class of marine sponges that belong to the phylum Porifera. They are commonly known as glass sponges due to their delicate and glass-like skeletons. Hexactinellids are characterized by their skeletons, which are composed of hexactins, which are specialized cells that secrete siliceous spicules. They are found in deep-sea environments around the world and are thought to play important roles in the ocean's ecosystem as both predators and prey.