These sharks are original graphics assets from early in Super Mario World's development. These graphics allow us to see how they would have looked in game.
There are two files included: one is an implementation of the original sprites taken from early development, and another is a remastered version that I made that makes for a more polished animation, as the original sprite is somewhat jarring when animated.
I include the original graphics as well because I believe there is some importance to them.
For use with SP4=6; no palette adjustment necessary.