Holothurin A is a toxin of the cuvierian tubules of Sea Cucumbers. It is a steroid Glycoside. Sea Cucumbers belongs to the Class Echinodermata.
Thornasteroid: Steroid Glycoside in Acanthaster planci (Echinodermata)
Thornasteroid occurs in acanthaster planci, a starfish living in tropical coral reefs, which belongs to the Class Echinodermata. It is a steroid glycoside.
