Do star fish have a circulatory system?

Answer 1

No, some invertebrates lack circulatory systems all together such as cnidarians, psudocoelomates and poriferas (sponges). Most of these use tubes that link their internal body to the external environment or they use a gastrovascular cavity. Some have closed circulatory systems such as mollusks (not cephlapods) and anthropods, the pump a fluid that lacks the complete distinction between extracellular fluid and circulating fluid thus this fluid is called Hemolymph.

Answer 2

Yes, Fish have many of the same organs as you. Including skin, eyes, stomachs, and bladders!

Answer 3

for sure invertebrates have open circulatory system.

Answer 4

i dont think they do

Answer 5

Yes, it is called a Water Vascular System

Answer 6

yes they have an open circulatory system

Answer 7

yep.