Alex Mustard / Colourful reef scene with Leather corals (Sarcophyton sp.), Soft corals (Dendronephthya sp.) Seafans (Melithea sp.) and fish, including Magenta slender anthias (Luzonichthys waitei) and Scalefin anthi...

Franco Banfi,Franco Banfi / Ocean Sunfish (Mola Mola) with Longfinned bannerfish (Heniochus acuminatus) Crystal Bay, Nusa Penida, Bali Island, Indonesia, Pacific Ocean

Claudio Contreras,Claudio Contreras / Long-beaked Coralfish (Chelmon rostratus) eye, Inanuran Island, Danajon Bank, Central Visayas, Philippines, April

Constantinos Petrinos / Orange banded coralfish {Coradion chrysozonus} Sulawesi, Indonesia

Fred Bavendam / Longfin Bannerfish (Heniochus acuminatus) pair, Bali, Indonesia

Pascal Kobeh / Cup coral (Turbinaria mesenterina) housing Blackblotch or blackspot squirrelfish (Sargocentron melanospilos) and a longfin bannerfish (Heniochus acuminatus), New Caledonia, Pacific Ocean.

Alex Mustard / Scalefin anthias (Pseudanthias squamipinnis) male with a long exposure. Ras Katy, Sharm El Shiekh, Sinai, Egypt. Red Sea. Commended in the GDT Photography competition 2019.

Alex Mustard / Colourful coral reef scene with Scalefin anthias (Pseudanthias squamipinnis), soft corals (Dendronepthya sp.) and hard corals (Acropora sp.). Ras Mohammed National Park, Sinai, Egypt. Red Sea

Alex Mustard / Colourful coral reef wall, with orange Scalefin anthias (Pseudanthias squamipinnis) swarming over red soft corals (Dendronephthya sp.) in a current. Ras Mohammed National Park, Sinai, Egypt. Red Sea

Georgette Douwma / Kaleidoscopic image of soft corals (Dendronephthya sp) and Lyretail anthias (Pseudanthias squamipinnis), Egypt, Red Sea.

Gary Bell/ Oceanwide / Six-banded Coralfish (Tilodon sexfasciatus) near piling covered with sponges, tunicates, and ascidians, Yorke Peninsula, South Australia, Australia