Crawling at truly a snail’s pace among the aquatic plants are the apple snails — golf - ball - size mollusks, equipped with gills and a simple - type lung, which enables them to breathe both under the water and out of the water.
Veetaimedel roomavad tõelisel teosammul järve emateod — golfipallisuurused molluskid, kellel on lõpused ja lihtsa ehitusega kopsud, mis võimaldavad neil hingata nii vees kui ka vee peal.