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Salmon are one of the most widely loved varieties of seafood in the world. A ubiquitous alternative to meat and poultry, salmon wear a halo of healthfulness, as they are rich in protein and...
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Bioluminescence is one of the more captivating adaptations that have evolved in...
Scientists describe the amazing bioluminescent creatures they encounter as they...
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The open ocean is surprisingly barren to the naked eye. Every now and again you...

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A candy basslet ( Liopropoma carmabi ) was just one of the specimens Smithsonian scientists collected from the deep reefs of Curaçao , in the southern Caribbean. To study biodiversity far below the water's surface, the...
Two bright orange anemonefish ( Amphiprion ocellaris ) poke their heads...
The pearly razorfish’s name may be slightly misleading since it is neither...

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By Lindsay Aylesworth, Project Seahorse The day I stepped into my wetsuit, donned my mask, and embarked on my first scuba...
Just like other seahorse species, male weedy sea dragons are the ones to get 'pregnant' and give birth to the babies. To show he is ready to hold eggs, the male wrinkles part of his tail. On this...
If there had been room to stand up, there would have been a standing ovation. As it was, the five of us on the submersible Curasub clapped and cheered when the first three deep-reef ARMS (Autonomous...
These beautiful mandarinfish ( Synchiropus splendidus ) are covered in bright blue, red, yellow and orange waves. What they lack, however, are traditional fish scales. They live in western Pacific...
An Arctic cod rests in an ice-covered space. View the “ Under Arctic Ice ” photo essay.
The long barbel on the chin of this dragonfish ( Stomias boa ) has a glowing tip that may attract prey. With its large mouth and sharp, curved teeth, the fish makes quick work of any prey that...
By Lindsay Aylesworth, Project Seahorse The day I stepped into my wetsuit, donned my mask, and embarked on my first scuba dive was the day I decided to be a marine biologist. Little did I know that...
A school of yellowfin surgeonfish, Acanthurus xanthopterus , feed near dusk off Canton Island in the Phoenix Islands, one of the world's largest marine protected areas. Think this photo should be...
For nearly 35 years, National Geographic photojournalist Brian Skerry has been immersing himself in the big blue to get the perfect underwater photograph. He admits that there will never will be a "...
“Every four years, sockeyes come inland from the Pacific to spawn. The year 2010 was the largest run in 100 years, reaching more than 30 million fish. On this day, I waited for the right sunlight,...
All over the world, people have been witnessing gigantic blooms of tens of thousands of jellyfish where once there were only a few. Fishers find them clogging their nets and costing them dearly. In...
This mysterious deep sea creature , which has an unusual bulge on its snout, grows to only about 68 mm (2.7 in) long. It lives deep in the ocean, like the whalefish . Find out how this fish was part...
Portrait of a yellow-green blennie ( family Clinidae ) hiding in the groove of a green brain coral.
The deep-sea dragonfish ( Stomiidae ), also called the barbeled dragonfish, uses it's fang-like teeth to grab prey in its deep-sea environment . Like other deep-sea organisms, dragonfish have...
The Eastern cleaner-clingfish ( Cochleoceps orientalis ) has its job title in its name: “cleaner.” They prove invaluable to larger fish by removing parasites to keep the larger fish clean and healthy...
The majestic and highly predatory red lionfish ( Pterois volitans ) , native to the Indo-Pacific, is invading Atlantic waters. The lionfish is a popular home aquarium species, and some were most...
Scientists are excited when they discover an animal where they had never seen it before. This eelpout fish, Lycodes adolfi, was seen on the Pacific side of the Arctic in 2009. Previously, scientists...
The pinecone fish ( Monocentris japonicus ) looks like the real thing on land—covered in large scales with a dark trim. They are found lurking in caves and under ledges in the Indian and Western...
Back at the lab, researchers sort the fish specimens they gathered in the field.
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