What kind of water does starfish live in?
there are many kind of starfish! 20,000 in fact! so starfish live in many kind of waters: some in deep waters, tropical waters, and cold waters!
They are not fish despite their name starfish. Starfish are often called sea stars and live only in salt water. Sea water, instead of blood, is actually used to pump nutrients through their bodies via a salt water vascular system. Since they must use salt water to pump nutrients throughout their bodies, they have to live in salt water.