Please create a coloring book page illustration with a flounder lying flat on the ocean floor, its body adapted to life on the seabed, with both eyes evolved to be on the upward-facing side of its head. The flounder should be partially submerged in the sand, showcasing its incredible natural camouflage that makes it almost indistinguishable from the sandy environment. Include a detailed fishing lure floating above, with the line extending off the page. The image should invite the viewer to spot the cleverly hidden creature, with subtle outlines for the flounder against a textured sandy backdrop. The drawing should have strong, clean lines suitable for coloring, with no shading or color, in a 2:3 aspect ratio."