Frog Airswim

Frog Airswim is a glitch that allows Mario to swim through the air as a frog to reach an indefinite horizontal distance. This is most notably used to skip the entirety of the Darker Side dungeon, where it is often known as Frog Skip. This glitch is only possible on game version 1.0.0, so it is no longer used in speedruns due to version 1.3.0 having the fastest load times.