Sponge Armor

 is an Armor set unlocked at. It requires to use.

Trivia

 * The boots are actually named "Spongy Shoes," as opposed to the rest of the set, which follows the usual naming pattern.
 * Wearing the full set will unlock the.
 * There used to be a bug where a player wears or  in water, then switches to another armor set while still in the water, they can gain the 2x  buff even if they are not wearing  or Shark Scale Armor.
 * This has been fixed in an update.