CUZ SAILFISH IS THE FASTEST FISH! I got kinda wrapped up a previous version of the background, and it was pretty much gonna be a baaaad idea. This background...eh, it's a little meh, but it'll work. Anyway, I'm trying to get back into coloring my stuff and throwing on backgrounds. I'm not great with backgrounds, not to mention not very patient, so they prolly won't be that involved, but hey, in existence is a step up at this point! So yeah, hopefully I'll do this more!
As for why there's a mer-Sonic here? Why not! Eh, mostly it's for fun. Swimming's fun, everything is fun, ALL THE FUN!