Organisms that live in a marine environment have skin gills

Organisms that live in a marine environment, have skin gills, tube feet, a coelom, and a water vascular system are classified as a(n)

tunicate.

lancelet.

planarian.

oligochaete.

echinoderm.

Solution

Echinoderms.

Reason: The information given corresponds to typical characteristics of echinoderms. They are penta-radial, coelomate and aquatic animals which contain tube feet for water translocation acriss the body for example star fish. Some representatives of this class do possess gill slits over body for gaseous exchange. However, water vascular canal is their main feature.