Bubble Weed

Bubble weed or bubble grass are green plants with oxygen-filled bubbles, found in aquatic regions of Rain World, particularly Drainage System. These plants act as oxygen tanks underwater, providing 20-30 seconds of air before the slugcat's own reserves are used.

Function
Bubble weeds release a stream of bubbles underwater, indicating extended breathing time. During this process, each bubble on the bubble weed is exhausted individually, until the entire plant is dark and wilted. When found in the world, bubble weed are often found attached to the ground, with all bubbles filled. When thrown, these plants have tendency to float upwards before descending slowly to the ground. Bubble weed are buoyant enough to float on the surface of the water.

Bubble weed will also stun nearby leeches momentarily.

Tips and Trivia

 * Bubble weeds were added to the game in the 1.5 update.
 * Two individual stalks of bubble weed can be held at the same time, but doing so underwater will drain both reserves simultaneously with no added benefit.