Jellyfish have existed for millions of years, long before dinosaurs roamed the planet. These jelly-like organisms can be found in both cold and warm seas, deep and shallow, and along coastlines, pulsing along on our ocean currents. Some jellyfish are transparent, while others come in a rainbow of colors including pink, yellow, blue, and purple. They can also be bioluminescent, meaning they generate their own light!
There are no brains, hearts, bones, or eyes in jellyfish. They have a smooth, bag-like body with tentacles that are armed with stinging cells. These amazing invertebrates shock or paralyze prey with their stinging tentacles before devouring it.
The mouth of the jellyfish is located in the middle of its body. It eats and discards waste through this tiny window. It also serves another purpose: the jellyfish will propel itself forward by squirting a stream of water from its mouth! Isn’t it cool?
Jellyfish digest their food easily, which includes fish, shrimp, crabs, and tiny plants. They wouldn’t be able to float if they didn’t, as the massive, undigested grub in their bodies would weigh them down.
Other sea creatures, especially sea turtles, enjoy consuming the jellyfish on a regular basis. People consume jellyfish in several cultures around the world. They’re considered a delicacy in China, and they’re also used in Chinese medicine.
Humans can be harmed by jellyfish stings, which can be painful and even fatal in some cases. The majority of stings occur when people inadvertently touch a jellyfish, despite the fact that these amazing aquatic animals do not target humans on purpose.