What is another word for water vascular system?
Pronunciation: [wˈɔːtə vˈaskjʊlə sˈɪstəm] (IPA) 
The water vascular system is a unique circulatory system found in echinoderms such as sea stars and sea urchins. This system is used for locomotion, feeding, and respiration. It is composed of a network of canals filled with seawater that extend throughout the body. These canals are lined with tube feet, small suction cups that allow the echinoderm to move and capture food. Synonyms for the water vascular system can include the hydraulic system, the water tube system, or the ambulacral system. These terms all describe the same unique circulatory system found in echinoderms.
