I've put in the back ground now, combination of thalo blue and cerulean blue with a touch of titanium white. The idea is to create depth and show streams of light filtering thru the water. this is all I've been able to do the past week... busy with work... and it had to stop and paint 2 pieces for a benefit for the PALS animal shelter (see next post on that)
After I added water, I also added the shark, he's the character in the back tossed in to create a little drama.