Seaweed

Seaweed summons a turtle pet that follows the player, like other pets. It lasts indefinitely and does not attack enemies nor take damage, and is purely for aesthetics. Seaweed is an uncommon item found in the Underground Jungle's Jungle Shrines.

Trivia

 * Turtle might be a reference to Tank from the television series "My Little Pony: Friendship is Magic", as they both fly with a propeller on its shell.