Jellyfish only have one orifice, they eat and pass waste through the same channel.. Yuck!
Jellyfish are some of the oldest living creatures on earth, and have been around for over 500 million years!
Jellyfish dont have a heart or even a brain, they dont need to breath either! Jellyfish simply absorb all the oxygen they need through the process of diffusion.
Jellyfish swarms or "blooms" can consist of tens of millions of individual jelly fish.
