This reminds me of the two turtles I had when I was little. I had a big one which was a girl, and a tiny boy. they were about the same size as the paintings when I last saw them ( its been about 10 years now) nice work!
Not sure what it's called but he's painting on resin, multiple layers of resin, and then taking a photo of it. Sometimes he uses a pebble, like with the octopus, to help give that 3D effect. It's an amazing effect don't you think?