Beautiful Turtle while free diving in the Red Sea - Abu Dabbed.

"Ghosts" (Carangoides fulvoguttatus - Yellowspotted trevally). Brightness, contrast etc. modified (PS Express) to accentuate highlights. Shot downwards into the blue with only natural light. - Erik

Face to face with a cute Amblyglyphidodon indicus (Maldives damselfish) - Els

Diving at the end of the group behind my wife's pink flippers, flabbergasted by the enormous corals of Fury Shoals, when suddenly a goldbody trevally crosses the scene. Quick shot, only natural light. - Erik

safari

This lovely creature came right at us and showed interest in my hair. Luckily it did not become a feeding frenzy. It further ignored us and found more pleasure in some soft coral. No additional lenses used so not really wide angle, 1 strobe. - Els

Propeller of the Belina with a Arothron hispidus (whitespotted puffer). Wide angle shot with only natural light. Just off shore the Old Sheraton Marina, Hurghada, Egypt. - Erik

Close up of Achaeus spinosus or "spiny spider crab" on soft coral. Inon UCL165 and UCL67 wet lenses stacked. - Els

Purple jellyfish in the red sea.
Shortlisted!

Christmas tree worm (Spirobranchus giganteus), Gamul Kebir, Safaga, Red Sea (Egypt)

Very small critter with a very very small fish in his claw. I only saw this on the picture at home.

adjusting

Small orange fish in the red sea.

Eye of a crodile fish. The eye has very nice details.

Puffer fish in the red sea.

Chinese wreck in the Red sea.

Chinese wreck on the Fury shoals.

Nice corals and fish at the Fury Shoals.

Krake

little shark with Tattoo

Small cave at the Fury Shoals in Egypt.

diver in a cave

Cavern in the South of Egypt.

Cavern at the Fury Shoals in Egypte. Playing with light. Maybe this picture is not only 'divers', but also 'marine life' as there is fish in this cavern.

GoPro snorkeling

A nice reef on the Fury Shoals in Egypt.

Fluorescence under water. Made with a blue strobe and a yellow excitation filter.