Sea Turtle tank at the Maritime Aquarium

This was my last sketch of the day. I was all out of black background pages, so I went to this page. The surface was prepared with sprayed blue and gold iridescent diluted acrylic paint with a slight pattern, created by putting a stencil over the page before spraying it. The painting was done with watercolor and gouache, and the writing with a Sakura Gelly Roll pen. The iridescent surface is beautifully shimmery in a subtle way, but I don't know if you can see that in the photo. The turtles stayed more to the background this trip. Last time they were nearly in my face the whole time I was sketching their tank!