I modeled everything in this scene. The sub, drones, the water turbulence behind the drones, all the fish, the sharks the landscape and even the bubbles in ZBrush. I then materialized and lit and rendered the scene in KeyShot. I used KeyShot's scattering medium to help create ocean depth. Had a lot of fun with this image.
This one is spectacular ! Had to look twice at those bubbles behind the drones. Pretty convincing atmosphere.
This is just incredible. Both modeling and render are amazing!