because none of them can breath air
Cnidarians live in water.
the cnidarians live at the bottom of the sea ------- and the top of the sea, and everywhere in between...
yes cnidarians lay eggs
no but live people can die underwater.
Yes, there are types of snail that can live underwater.
Cnidarians come in two forms: a medusa has tentacles that hang down and polyps usually live attached to a surface.
Sponges and cnidarians commonly reproduce asexually by budding
None of the above.
because none of them can breath air
Frogs live both underwater and above (on land). They are amphibians.
They mostly live in salt water, but a few species live in freshwater ponds and lakes.
On land most likely.