A window, not a tube. Four of them, drifting.

Four Jellyfish, Not One
Four small silicone bells drift at different depths instead of one going up and down on its own. They lift straight out when you want to empty the tank, and they go back in the same way.
- Four Jellyfish, Not One
- Four small silicone bells drift at different depths instead of one going up and down on its own. They lift straight out when you want to empty the tank, and they go back in the same way.

Seven Colours, Or A Slow Fade
Blue, light blue, pink, yellow, green, red and white. Press to hold whichever one is showing, or leave it on the breathing gradient and let it drift between them on its own.
- Seven Colours, Or A Slow Fade
- Blue, light blue, pink, yellow, green, red and white. Press to hold whichever one is showing, or leave it on the breathing gradient and let it drift between them on its own.

Three Speeds, Including Stop
Normal is the usual drift. Slow reads better from across a room. Static stops the pump entirely and leaves the water still, which is the one to use on a desk you are working at.
- Three Speeds, Including Stop
- Normal is the usual drift. Slow reads better from across a room. Static stops the pump entirely and leaves the water still, which is the one to use on a desk you are working at.

A Brushless Motor, And Very Little Noise
It moves water rather than air, so there is no fan note to it — the seller publishes it under 25 dB. There is also an 8-hour auto shut-off, so it turns itself off overnight.
- A Brushless Motor, And Very Little Noise
- It moves water rather than air, so there is no fan note to it — the seller publishes it under 25 dB. There is also an 8-hour auto shut-off, so it turns itself off overnight.
Wide water, slow motion. And a button for still.

Four Jellyfish, Not One
Four small silicone bells drift at different depths instead of one going up and down on its own.
Seven Colours, Or A Slow Fade
Blue, light blue, pink, yellow, green, red and white.
Three Speeds, Including Stop
Normal is the usual drift.
A Brushless Motor, And Very Little Noise
It moves water rather than air, so there is no fan note to it — the seller publishes it under 25 dB.
How we compare.
Where a wide round tank of moving water differs from a tube and from a plain lamp.
Frequently asked
questions.
The questions people actually ask before buying one.
Yes. It ships dry: you open the tank, fill it with tap water, drop the four jellyfish in and close it. It takes a minute at the sink, and nothing moves until you do it.
Four, in the box. They are small silicone bells with long trailing tentacles, and they lift straight out of the tank when you want to empty or rinse it.
No. Everything happens on the three buttons across the front of the base — power, light and flow speed. If you wanted to change it from the other side of the room, this is not the one.
Normal is the standard drift. Slow is slower and reads better at a distance. Static switches the pump off so the water goes still and the jellyfish simply hang there — useful on a desk.
8.4 inches tall, 7 inches wide and 2.6 inches deep, with a 6.5 inch circular viewing area. It is wide rather than tall, so it wants shelf width rather than headroom.
Yes, after 8 hours. Leave it running when you go to bed and it will have shut down by the morning rather than run all day.
USB-C. It will run off a wall plug, a laptop or a power bank, so where you put it is a question of cable length rather than sockets.
Free U.S. shipping and a 30-day return window. Fill it, live with it for a week, and send it back if it is not what you pictured.
