Another request. I know the water uni does not yet exist, so this is my take on what it might look like. So, yeah, don't get all excited looking for the actual thing on Neopets, as you probably won't find it.
Because of the gradients and small shapes, the color was done in Photoshop and the line art was done in Illustrator.
EDIT: As it turns out, The Neopets Team made a water uni shortly after I made this one. I got it almost spot on.