Inner Tube

The Inner Tube is an accessory that causes the player to float on the surface of liquids instead of sinking to the bottom. The effect can be temporarily negated by holding. It can be found in Water Chests, as well as Ocean Crates and Seaside Crates.

The Inner Tube's effects are replaced with the Flippers effect if Neptune's Shell or any of its derivative accessories is also equipped, or if the player is holding a Trident.

Trivia

 * The Inner Tube is likely based off 'floaties' found at the waist, commonly used by children to stay afloat while learning to swim. Some are also worn on the arms along with a life vest.

History
浮游圈