This was originally made for a challenge on Equestria Amino called “Seaponies Challenge” which is to draw your OCs as seaponies. It’s that simple.
 
I used three of my OCs, Fire Sparks, Carrot Root, and me as Film Reel, as seaponies. I put their Cutie Marks on the edge of their bodies instead of on their fins since I had no room for them there. And I was going to include Ocean Blue here, but she doesn’t need to be a seapony since she can be underwater without being one.
 
Originally drawn in pencil. Colors, Cutie Marks, bubbles, and edits done in Photoshop.