Spring Ball

Description
The Spring Ball (also known as the Jump Ball) is an item that has appeared in the Metroid series. The Spring Ball allowed Samus Aran to jump in Morph Ball form, thus invalidating the Morph Ball Bombs as a mode of quick locomotion. It has appeared in Metroid II: The Return of Samus, Super Metroid, Metroid Fusion, and Metroid Prime 3: Corruption.

Metroid II: The Return of Samus
First aquired on SR388, the Spring Ball is one of the two Morph Ball add-ons (other being the Spider Ball)to have appeared in later Metroid games, although the two only appear together in Metroid Prime 3: Corruption.

Super Metroid
In Super Metroid, the Spring Ball is not aquired with the High Jump Boots. Instead, the Grapple Beam must be used to uncover a passage that leads to a Morph Ball Maze in which you will find the Spring Ball

Zero Mission
In Metroid: Zero Mission, the upgrade is not mentioned by name, as it is included with the High Jump Boots.

Fusion
In Metroid Fusion, it is also included with the High Jump ability, but is called the Jumpball. This is acquired by defeating the first boss of Sector 2, TRO.

Corruption
In Metroid Prime 3: Corruption the ability is available from the beginning of the game. In this game it is also not mentioned by name and does not allow the morph ball to go as high as the 2-D versions. To use the Spring Ball, you flick up with the Wii Remote.