Whip

The Snake Whip is an item in Spirit Tracks. It is obtained in the Ocean Temple. Its main use is to swing from poles similar to what the Grappling Hook from Wind Waker and for puzzles found in certain dungeons that require the transfer of certain swords. It does have a use as a weapon as it can attack certain ChuChus that Link could not attack with his sword alone and it can take the shields and armor from certain enemies.

Trivia

 * The Snake Whip bears a striking resemblance to the Rope Snake, a character/item from another Nintendo game, Mother 3, in terms of both appearance and abilities.
 * This weapon also pays homage to the Rope enemy present in most, if not all, of the Zelda handheld titles.