How can cnidarians such as sea jellies survive in the water

Last updated: 7/4/2023

How can cnidarians such as sea jellies survive in the water with no gills or lungs Othey must periodically rise to the surface to get air Otheir cells don t need oxygen since they move so little Othey have special oxygen pumps in their cells Otheir body walls are extremely thin Othey don t have a nervous system whil