Sea Cucumber Cardiovascular System:
Sea Cucumbers, or Holothuroidea, are part of the Echinodermata phylum. They are marine animals with a type of leathery skin, they are found at the bottom of the ocean world wide. These animals got their name because as you can see from the picture on the left they look like a cucumber. They don't have a Cardiovascular system, in place of this they have a water vascular system that allow them to move by putting hydraulic pressure to their tentacles. |