Jellyfish Lamp – A Water Tank With Drifting Jellyfish And 7 Colours

Jellyfish Lamp A Tank You Fill With Water

$34.99

A jellyfish lamp you fill with water: the jellyfish circulate on a quiet pump while the tank fades through seven colours, on USB or on batteries.

You Fill It With Water Seven Colours, One After Another Everything Is On The Base The Pump Is The Quiet Part

Quantity

1

Size·11 inch

Free U.S. shipping · 30-day returns

Most colour-changing lamps are a plastic shell with an LED behind it. This jellyfish lamp is a tank. The lid unscrews, you fill the clear cylinder with tap water from the kitchen, drop the jellyfish in and screw it shut — and from then on the jellyfish lamp is doing something a bulb cannot fake. A pump in the base makes a slow current, and they lift off the bottom, turn over, drift up with their tentacles streaming behind them, then sink and start again. It never repeats.

That is the part worth knowing before you buy: it arrives dry. Filling it takes about a minute at the sink, and the lid has a silicone seal, so once it is shut it stays shut. Nobody mentions this on the box, and it is the difference between a jellyfish lamp that moves and an ornament that sits there.

The jellyfish lamp runs through seven colours on its own — red, orange, yellow, green, cyan, blue, violet — fading one into the next, and the whole column of water carries the colour, not just the base. Press the switch again and it stops on whichever one is showing, so the jellyfish lamp can be a slow rotating thing on a shelf or a single flat green on a desk, whichever suits the room. In a dark room it is genuinely the only light you need on.

The pump is the quiet part. It is a water pump rather than a fan, and at arm's length there is nothing to hear over it — which matters, because a jellyfish lamp that hums is a jellyfish lamp you switch off. All the movement, none of the noise.

Power is a USB cable, which is in the box, or batteries, which are not. That second option is the useful one: with batteries in it, the jellyfish lamp goes on a mantelpiece or a bookshelf with no socket anywhere near it and no cable trailing down the wall. Two honest limits — there is no remote, so the switch on the base is how you change anything, and you will want to buy the batteries at the same time.

It comes in two heights. The 11 inch stands 11 inches tall and 3.9 inches across, which is about a mug and a half of desk space, and the 15 inch is the same cylinder and base carried four inches higher for a shelf you look up at. The jellyfish lift straight out of either one, so a jellyfish lamp that has been on a windowsill for a year can be emptied, rinsed and refilled in the time it takes to make tea.

You Fill It With Water
Seven Colours, One After Another
Everything Is On The Base
The Pump Is The Quiet Part

Two heights, same tank. What matters is the shelf depth and whether there is a socket nearby.

11 inch – 11" tall × 3.9" across; desk, bedside table or a narrow shelf
15 inch – the same cylinder and base carried four inches higher; better on a mantelpiece or anywhere above eye level
Power – USB cable included, or batteries (not included). No socket needed if you use batteries
Controls – one switch on the front of the base; no remote
Before first use – unscrew the lid, fill with tap water, add the jellyfish, screw the lid back down onto its seal

Stand it on a flat, steady surface. To clean it, tip the water out, lift the jellyfish free, rinse and refill.

Type: water-filled jellyfish lamp
Sizes: 11 inches tall × 3.9 inches across, or 15 inches tall
Tank: clear cylinder, filled with tap water by you; screw-on lid with a silicone seal
Contents: synthetic jellyfish, removable
Movement: water pump in the base, whisper-quiet
Light: 7 colours on an automatic cycle, or held on one
Controls: one switch on the base; no remote
Power: USB cable included, or batteries (batteries not included)
Care: empty, rinse and refill; wipe the base with a dry cloth

Free shipping on every U.S. order. No minimum.
Delivered in 5–9 business days after a 1–2 day handling time.
30-day returns – if the fit isn't right, send them back.

Fill it once. Then just watch it.

A REAL WATER TANK

You Fill It With Water

The cylinder is empty when it arrives and takes about a minute at the sink to fill. Once the lid is sealed, the pump in the base makes a slow current and the jellyfish lift, turn and sink through the whole height of the water with their tentacles trailing behind them.

You Fill It With Water
The cylinder is empty when it arrives and takes about a minute at the sink to fill. Once the lid is sealed, the pump in the base makes a slow current and the jellyfish lift, turn and sink through the whole height of the water with their tentacles trailing behind them.

SEVEN COLOURS

Seven Colours, One After Another

Red, orange, yellow, green, cyan, blue and violet, fading one into the next on their own. Press the switch again and it holds on whichever colour is showing, so it can be a slow cycle across a room or one flat colour beside you.

Seven Colours, One After Another
Red, orange, yellow, green, cyan, blue and violet, fading one into the next on their own. Press the switch again and it holds on whichever colour is showing, so it can be a slow cycle across a room or one flat colour beside you.

THE CONTROLS

Everything Is On The Base

One small switch on the front of the base does on, off and colour — there is no remote, so everything happens where you put your hand. Behind it is the socket for the USB cable, and above it the lid screws down onto a silicone seal.

Everything Is On The Base
One small switch on the front of the base does on, off and colour — there is no remote, so everything happens where you put your hand. Behind it is the socket for the USB cable, and above it the lid screws down onto a silicone seal.

THE PUMP

The Pump Is The Quiet Part

It moves water rather than air, so there is no fan note and nothing to hear from across the room. The only thing the lamp actually does out loud is throw colour onto the wall behind it.

The Pump Is The Quiet Part
It moves water rather than air, so there is no fan note and nothing to hear from across the room. The only thing the lamp actually does out loud is throw colour onto the wall behind it.

WHAT COMES WITH ITFree U.S. shipping30-DAY RETURNSSecure checkout

Water, light and motion. Nothing to listen to.

01

You Fill It With Water

The cylinder is empty when it arrives and takes about a minute at the sink to fill.

02

Seven Colours, One After Another

Red, orange, yellow, green, cyan, blue and violet, fading one into the next on their own.

03

Everything Is On The Base

One small switch on the front of the base does on, off and colour — there is no remote, so everything happens where you put your hand.

04

The Pump Is The Quiet Part

It moves water rather than air, so there is no fan note and nothing to hear from across the room.

How we compare.

Where a tank of moving water is different from a lamp that only changes colour.

Ours

A colour-changing LED lamp

A lava lamp

Real water in the tank, filled by you

Jellyfish carried on a real water current

Seven colours on an automatic cycle

Holds on a single colour

Runs on USB or on batteries

Contents lift out and can be swapped

Frequently asked
questions.

The questions people actually ask before buying one.

Yes, and this is the thing to know before you order. It ships dry: you unscrew the lid, fill the cylinder with ordinary tap water, drop the jellyfish in and screw it back down onto its silicone seal. It takes about a minute, and nothing moves until you do it.

No. Everything is done with the one switch on the front of the base — on, off, and stopping the colour cycle on the colour you want. If you had it in mind to change it from across the room, this is not the lamp for that.

Two ways. The USB cable is in the box, so it will run off a wall plug, a laptop or a power bank. It also takes batteries, which are not included — worth buying at the same time, because that is what lets you put it somewhere with no socket.

They are synthetic and translucent, bell-shaped with long trailing tentacles, and they come in the box. They lift straight out whenever you want to empty or rinse the tank.

Yes. Left alone it fades through all seven. Press the switch when it reaches the one you want and it stops there and stays until you change it.

Quiet enough that you notice the light and not the lamp. It is a water pump, not a fan, so there is no whirring note to it — from a metre away there is effectively nothing to hear.

The 11 inch is 11 inches tall and 3.9 inches across and suits a desk, a bedside table or a narrow shelf. The 15 inch is the same tank and base carried four inches higher, which reads better on a mantelpiece or anywhere you are looking up at it.

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.