Okay, I went a bit farther with this then I meant to. I was just gonna lay in the basic shapes and some colours. Instead, I ended up inking my initial sketch. Once I got started, I wanted to go further with the colouring, but I also wanted to have something that looked fairly cohesive, so I ended stopping here.
Anyway, this was my sketch for the day. I used one of my own photos for reference, from a recent trip to the Seattle Aquarium. You can compare it here: [link]
Also you can see in progress shots here at my art blog:[link]