Water vascular system is present in
Adamsia
The water vascular
system is a hydraulic system used by echinoderms, such as sea stars
and sea urchins, for locomotion, food and waste transportation, and
respiration. Adamsia is a genus of sea anemones in the family
Hormathiidae. So the Adamsia have water vascular system.
So
the correct answer is 'Adamsia'.