Moon jellyfish

The Moon Jellyfish (known as the Jellyfish prior to ) is a sea creature (fish prior to ) in the introduced in. While initially absent from, the Moon Jellyfish was added in the 1.3.0 Free Summer Update.

Prior to, the Jellyfish is unique in that it has the shortest range of any fish at only two weeks (August 16 through August 31), and that it has the lowest selling price of any fish at 100 Bells. While not catchable in, Jellyfish appear as obstacles while swimming that stun the player if swam into.

Donating to the museum
As with all fish, bugs, and sea creatures in the, the Jellyfish can be donated to the museum by talking to Blathers. He will tell the player the following upon donation:

In
The Jellyfish appears in the museum's right circular tank. It just hovers in the same place, occasionally jumping forward a bit.

In
When donating to the museum, Blathers will say the following:

After being donated, it will be visible in a large swarm under a floorglass by the Sea Butterfly's tank.

In
During a Fishing Tourney, when given a Jellyfish, Chip will say the following:

Real-world information
The moon jellyfish is almost entirely translucent, usually about 25–40 cm (10–16 in) in diameter. It feeds by collecting medusae, plankton, and mollusks with its tentacles, and bringing them into its body for digestion. It is capable of only limited motion, and drifts with the current, even when swimming.