This is really wonderfully done. Fluttershy looks very sweet with her little smile, and it's great the way you made her mane flowing behind her as she swims. The underwater creatures seem quite happy with her presence here - especially that clown fish on the lower right, I think. Angel Bunny's expression is just so perfect, and the underwater foliage looks fantastic. You drew and colored this really well, and the subsurface lighting was done rather nicely. It must've taken a lot of work, but the results are so delightfully splendid!