Sirachai Arunrugstichai / Ranong guitarfish (Rhinobatos ranongensis) caught in a bottom-set gill net in the offshore region of the Myeik Archipelago, Tanintharyi Region, Myanmar, Andaman Sea.

Sirachai Arunrugstichai / Aerial view of Blacktip reef shark (Carcharhinus melanopterus) pup prowling over a sand flat along the water's edge by the beach of Maya Bay, Hat Noppharat Thara - Mu Koh Phi Phi National Park, Krabi,...

Sirachai Arunrugstichai / Skeletons of various tropical reef fish from a collection of the Department of Marine Science, Chulalongkorn University, exposed with X-ray imaging, Bangkok, Thailand, August, 2023. The image is arran...

Sirachai Arunrugstichai / Aerial view of boats in the cove at Horseshoe Island, Myeik Archipelago, Tanintharyi Region, Myanmar, Andaman Sea. February, 2023.

Alex Mustard / Close up showing the colours and textures of the curling arms of a Crinoid on a coral reef, Anilao, Batangas marine protected area, Luzon, Philippines, Pacific Ocean.

Alex Mustard / Orange painted frogfish (Antennarius pictus) resting between the venemous spines of a Fire urchin (Asthenosoma varium), Batangas marine protected area, Luzon, Philippines. Verde Island Passages, Pacif...

Alex Mustard / Pygmy lemon gobies (Lubricogobius exiguus) pair, guarding their home in a glass bottle, Batangas marine protected area, Luzon, Philippines, Verde Island Passages, Pacific Ocean.

Alex Mustard / Coleman shrimps (Periclimenes colemani) pair, female on right, camouflaged in their Fire urchin (Asthenosoma varium) home, Batangas marine protected area, Luzon, Philippines. Verde Island Passages, Pa...

Alex Mustard / Saddleback anemonefish (Amphiprion polymnus) and a Spotted porcelain crab (Neopetrolisthes maculatus) living together in an anemone. Bitung, North Sulawesi, Indonesia, Lembeh Strait, Molucca Sea.

Alex Mustard / Pygmy seahorse (Hippocampus bargibanti) among a Sea fan (Muricella sp.) on a coral reef, Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Joel Sartore / Photo Ark / Javan small-toothed palm civet (Arctogalidia trivirgata trilineata) male yawning, Prigen Conservation Breeding Ark, Java, Indonesia. Controlled conditions.

Joel Sartore / Photo Ark / Red giant flying squirrel (Petaurista petaurista nigricaudata) looking round at the camera, Prigen Conservation Breeding Ark, Java, Indonesia. Controlled conditions.