Image credits

Photography on this site is used under the Unsplash License (unless otherwise noted). With gratitude to every photographer below.

• A. TlacuiloA large school of silver fish swimming over a dark coral reef
• Adam JumanA scuba diver exploring a coral-covered shipwreck in blue water
• Agnes LeeAn aerial view of the circular Great Blue Hole sinkhole ringed by turquoise shallows off Belize
• Ameya SawantThe Milky Way above a dark tropical beach and anchored boats at Pulau Tenggol
• Asril S DialyA tree-lined shore beside calm water under a cloudy sunset sky on Morotai Island
• Bernd DittrichA large rocky, jungle-covered island rising from the sea, with no buildings or development visible
• BRYNLLDA whale shark swims through clear blue open water
• CHUNGHOI KIMA scuba diver hovers above the sand and rock of the Silfra fissure in Iceland, the rift dropping away into deep blue glacial water
• Corentin LargeronA blacktip reef shark swims over a sandy seabed
• Dani GrauA hawksbill sea turtle swimming over a shallow coral reef
• Darcy WheelerA whale shark swimming near the surface in open blue water
• David ClodeA grey reef shark cruising underwater
• David ClodeColourful reef fish swimming over hard corals in clear water
• Ed RushA yellow and purple nudibranch rests on black sand
• eileen byrneA person crossing clear turquoise water off Cozumel, Mexico
• Ekaterina ZlotnikovaTwo purple and yellow nudibranchs on a rocky seabed, photographed close up
• Ekaterina ZlotnikovaClose-up of a small blue nudibranch with black stripes clinging to coral
• Erick Morales OyolaA colourful nudibranch sea slug on the seabed
• Eris MarasiganA wooden waterfront dock overlooking calm water in Subic Bay
• Everest LouisA manta ray swimming through open water
• geoff troddA dense school of silver fish swimming together underwater
• Heidi BruceA vibrant coral reef in blue water with a scuba diver in the background
• Ivan TorresA long-tailed thresher shark swimming in dark ocean water
• Jailam RashadAerial view of Fuvahmulah's green island edge, reef shelf and deep blue ocean
• Jakob OwensA school of sharks swimming together in open blue water
• Jakob OwensA group of grey reef sharks schooling together underwater
• Jakob OwensA manta ray glides through bright, clear tropical water
• Jakob OwensA nurse shark swimming close to the camera in clear blue water
• Jeremy BishopA shark swimming through deep blue open ocean water
• Jeremy BishopA spotted whale shark swimming alone through clear blue open water, with no boats or people in frame
• Jesse SchoffA green sea turtle gliding through open blue water
• Joel_SharksTwo tiger sharks ascending through blue ocean water
• Jonas AllertA hammerhead shark photographed close up in open blue water
• Karl CallwoodTwo divers approaching a sunken shipwreck hull underwater
• KinoA reef manta ray swims through open blue water
• KishorAerial view of the forested Pulau Tekek shoreline and shallow coastal water at Tioman Island
• Maahid PhotosA tiger shark cruising low over a pale sandy seabed in clear blue water
• Madeline LiuA hammerhead shark swimming through deep blue open ocean water
• Max van den OetelaarClear blue water inside a rocky Mediterranean sea cave with an arched rock opening
• Micah YoungAerial view of a small forested island surrounded by blue water in the Togian Islands
• Mikhail PreobrazhenskiyClose-up of a seahorse gripping the seabed on a plain, dimly lit bottom
• Milos PrelevicA dense shoal of silver trevally packed tightly together in open blue water
• Myra ProAerial view of longtail boats floating on turquoise water off Koh Lipe island in the Andaman Sea, Thailand.
• natary tA sea turtle swims over a coral reef in clear water
• naushad mohamedA manta ray gliding through clear blue water, seen from below
• NEOMA sea turtle swimming over a coral reef
• NEOMA scuba diver navigates a rocky underwater swim-through cavern
• NEOMA scuba diver swims above a colourful hard-coral reef in clear blue water
• NEOMA large school of fish swimming over a tropical coral reef
• NEOMA large group of small reef fish swimming above a densely covered coral reef
• Nicolas SahucUnderwater view of a sunken ship's hull with fish swimming around the wreck
• NIR HIMIA scuba diver explores a sunken shipwreck in dark underwater surroundings
• Nott PeeraA reef manta ray glides over a shallow coral reef
• Oleksandr SushkoAn underwater view of a tropical coral reef with fish swimming above it in blue water
• Olga gaA sunken shipwreck resting on the seabed at depth, seen by a scuba diver underwater.
• Oliver SchwanebergA clownfish peeks out from the tentacles of its host anemone
• Oliver SchwanebergA small orange frogfish resting on the sandy seabed
• Oliver SchwanebergA small orange frogfish resting camouflaged on the sandy seabed
• OnBird Phu QuocA large plate-like Pavona coral colony on a shallow reef in Phu Quoc
• pixmikePalm trees overlooking a blue coastal bay and green hills in Romblon
• Ricky BeronAn octopus camouflaged against a coral reef in blue water
• Roberto NicksonA diver plunges headfirst into the glowing turquoise water of the Dos Ojos cenote beneath a dark limestone cavern roof
• Sebastian Pena LambarriA manta ray gliding through blue open water, seen from below
• Sebastian Pena LambarriTwo scuba divers swim through deep blue water beside a reef
• Sebastian Pena LambarriA whale shark swimming through deep blue water with sunlight filtering from the surface
• SGRA school of fish swims over a healthy coral reef
• Simon SpringAerial view of forested limestone islands and turquoise water in Raja Ampat, Indonesia
• Stella WeisLarge granite boulders rising from clear shallow turquoise water in the Thai Andaman Sea.
• Swanson ChanA humpback whale and her calf swimming side by side just below the surface in sunlit blue water
• Swanson ChanA manta ray with remoras gliding through open blue water, its cephalic head fins extended and white underside visible
• Teuku Muhammad Farras DeyarabiClose view of rippled blue sea from a boat off Sabang, Aceh
• Ursula KrapfA dense soft-coral reef with small fish in blue water
• Wexor TmgA sea turtle swimming underwater through sunlit blue water
• Wolfgang HasselmannA volcanic island rising from the open ocean under a blue and purple sky at dusk