Maison Jellyfish (くらげや Kurageya?) is an inn at Jellyfish Beach where the Tendos and Saotomes stayed while visiting. After Akane Tendo won the Jellyfish Swimsuit and hung it near a window, Ranma Saotome examined it and noticed that it stretched by itself. Happosai then tried to grab the swimsuit before getting booted away him. However Akane, drawn by the noise, then smacked Ranma on the head with a mallet.
The Japanese word for jellyfish is kurage (クラゲ?), which is normally written in katakana. In the manga the inn's name is written in hiragana.