Yes, inside their bell-shaped body is an opening that is its mouth. They eat and discard waste from this opening.
It also serves another purpose, by squirting a jet of water from its mouth, the jellyfish can propel forward.
Jellyfish digest their food, which consists of fish, shrimp, crabs and tiny plants, very quickly. If they didn’t, they wouldn’t be able to float, being weighed down by the large, undigested grub in their body.
Jellyfish have no brain, heart, bones or eyes. They are made up of a smooth, bag-like body and tentacles armed with tiny, stinging cells. These incredible invertebrates use their stinging tentacles to stun or paralyse prey before gobbling it up.
Check out more fascinating facts about jellyfish at Treehugger.com.