Espen Bergersen / Crab-eating macaque (Macaca fascicularis) group fighting, Hua Hin, Thailand.

Espen Bergersen / Crab-eating macaque (Macaca fascicularis) with packet of crisps, Hua Hin, Thailand.

Sirachai Arunrugstichai / Large colonies of Gorgonian sea fan (Melithea sp.) with an unusual white colouration, not related to coral bleaching. With a school of Bigeye snapper (Lutjanus lutjanus) at Hin Khao, Andaman coast, Sa...

Sirachai Arunrugstichai / Group of tourists with colourful kayaks entering a small beach surrounded by jagged karst formation of Prasat Hin Phanyod. An ecotourism destination managed by local community in Mu Koh Phetra Nationa...

Sirachai Arunrugstichai / Colourful Soft corals (Dendronephthya hemprichi) with reef fishes, including Golden damselfish (Amblyglyphidodon aureus) at Hin Daeng, an underwater pinnacle that is a popular dive site in the souther...

Sirachai Arunrugstichai / Colourful Soft corals (Dendronephthya hemprichi) with reef fishes, at Hin Daeng, Mu Koh Lanta National Park, Krabi Province, Thailand, February 2, 2019.

Sirachai Arunrugstichai / Golden damselfish (Amblyglyphidodon aureus) swims through a school of Sweepers (Parapriacanthus sp.) at Hin Daeng, an underwater pinnacle that is a popular dive site in the southern Andaman Sea of Tha...

Sirachai Arunrugstichai / Colourful Soft corals (Dendronephthya hemprichi) with reef fishes, at Hin Daeng, an underwater pinnacle that is a popular dive site in the southern Andaman Sea of Thailand, Mu Koh Lanta National Park,...

Sirachai Arunrugstichai / Graeff's sea cucumbers (Bohadschia graeffei) extend their bodies to spawn on top of coral bommie, releasing gametes into the flowing current at Hin Daeng Pinnacle, Mu Koh Lanta National Park, Krabi Pr...

Sirachai Arunrugstichai / Graeff's sea cucumbers (Bohadschia graeffei) extend their bodies to spawn on top of coral bommie, releasing gametes into the flowing current at Hin Daeng Pinnacle, Mu Koh Lanta National Park, Krabi Pr...