Invisible Warthog Ammo

In Halo: Combat Evolved, driving a Warthog into deep water will cause the cartridges on the chaingun belt to become invisible as long as they are under water. The gun still fires normally despite the fact that it appears to be empty.

This is probably caused by the simple design of the rounds on the ammunition belt. They are 2D textures unlike the 3D belt.

This can be done on the campaign level Silent Cartographer as well as the multiplayer level Death Island. However, the water found in the latter is not deep enough to cover the ammunition belt unless the Warthog is flipped.