Jellyfish

It isn't doable unless you are willing to spend thousands and thousands on just the tank, and even then they won't do very well probably.

>>2424024
You can buy small jellyfish aquariums for a couple hundred bucks.

>>2424011
You don't really take care of them. You just feed them every now and then. Maybe change some water sometimes.

>>2424030
>You can buy small jellyfish aquariums for a couple hundred bucks.
Yeah, and they aren't actually suitable for anything past keeping them alive for a little bit.

>>2424011
You could always jizz into a lava lamp for a similar effect mate.

I've seen some round tanks with the filter circulating the water around the circle, I don't remember what they were called but I thought they were relatively cheap. I would also love to keep some, basically a living lava lamp. They don't need much in the ocean I don't know why they wouldn't be fine in captivity.

>>2424052
almost every aquarium I have been to has simple modified a tall tank with some plexiglass in the bottom corners. like a skateboard ramp. and circulation is loosely circular. If you very familiar with fish it doesn't look very expensive. i'm not sure it would be fun though. especially if you just marched your ass into the ocean and grabbed some