From Old to Young
Welcome to another Weekly Weird post. We're here to talk about the immortal jellyfish, and their unique inherited traits.
As you see from their name, immortal jellyfish can never die. Well, they can't die from age at least.
This jelly can turn itself back into a polyp (a baby jellyfish). Then the jelly goes through their life cycle all over again. It's unbelievable!
You might be wondering how this jelly does it. Well, if you look closely, you can see something in the middle of the jellyfish during their medusa (adult) stage. That thing is the polyp. The polyp grows around them instead of changing themselves completely. When the medusa is scared, injured, or dying, they release their tentacles, the polyp shrinks, and sinks to the bottom of the seafloor.
The jelly's body serves as a suit of armor for the polyp. Predators or anything else trying to kill the immortal jellyfish must first get rid of the jelly's tentacles, and then the actual jelly before having a chance to kill the polyp before it sinks to the bottom of the sea. Then the jelly restarts their life cycle.
The immortal jellyfish is definitely an ageless wonder. ;)