Edit image 1. Keep everything the same: composition, corals, sand, fish, light, colours and camera. Change only the left rock outcrop: make it one connected, geological grey rock mass with angular broken planes and long natural cracks, like the rock in image 2, instead of stacked round boulders; replace the round tunnel-like hole with a natural narrow dark crack under an overhanging slab, about a hand wide and a forearm long, deep and shadowed inside, at mid height of the rock: a believable octopus hiding place. Slightly soften the micro texture on the rock and sand so the surfaces read as smooth stylized 3D animation shading.
