CA Age 13. This is Kids' Earth and Sky. And this is Kathy. Jellyfish don't have bones, so they're actually way more closely related to squishy worms and bugs than to fish.
Jellyfish live in almost all the world's oceans, and they come in all sizes.
Some are as tiny as the head of a pin, and others are as huge as a backyard satellite dish. And jellyfish are about as smart as a Frisbee, too. They absorb oxygen directly from the water. You can spot a jellyfish pretty easily. They look sort of like little umbrellas with dangling ribbons.