Whip

The Whip is an item from The Legend of Zelda: Spirit Tracks. A bullwhip which bears the likeness of a snake, it is acquired within the Ocean Temple. The Whip can be used both as a weapon and to swing across chasms by latching onto suspended objects such as poles and birds carrying pieces of wood in their beaks, in a manner similar to the Grappling Hook. It can also be used to snatch objects from enemies, such as shields from Zora Warriors and helmets from Helmet ChuChus. In addition to its use in dungeons, the Whip can be used in a Whip Race mini-game in Whittleton.

Originally, the design of the Whip as seen in the first two trailers for the game, was that of a typical bullwhip; however, in the third trailer released, the design was changed into a snake-like whip for unknown reasons.

Theory
The 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, so it is possible that the Rope Snake was the Whip's inspiration.