I liked this shot showing a contrast of a relaxing turtle against a busy background of fish swimming.
I shot this with dual strobes but also using a larger aperture to highlight the background scene

This is a pygmy seahorse taken in Selakan Island, Semporna, Malaysia. Shot at around 15 meters depth. The pygymy seahorse is a difficult subject to shoot due to its size and entanglement with its host. Shot with Sony A7Riii with Marelux housing