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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 likely dumped...
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Salmon are one of the most widely loved varieties of seafood in the world. A...
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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 Pacific hagfish ( Eptatretus stoutii ), a fish that looks similar to an eel, has no jaw and is totally blind. They find food, often dead fish, through a specialized sense of smell and, because they can absorb nutrients...
By diving in the Curasub, Smithsonian researchers with the Deep Reef...
The long barbel on the chin of this dragonfish ( Stomias boa ) has a glowing...

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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...
The long toothy rostrum or “saw” gives sawfish their common name. They use the saw to dig in the sand for crustaceans or to attack prey by vigorously slashing from side to side. This smalltooth...
The longsnout seahorse ( Hippocampus reidi ) can be found near seagrasses, corals, sargassum and mangroves . These seahorses usually are between three to seven inches tall and could be threatened...
Studies along the Northwest Atlantic Ocean shelf break- the transition from continental shelf to slope- by researchers from Woods Hole Oceanographic Institution and Rutgers University are revealing...
Healthy coral reefs support a mindboggling array of life. Here, at Rapture Reef in the Northwestern Hawaiian Islands, colorful fishes throng the waters for as far as the eye can see.
This offshore cage is stocked with 70,000 Pacific threadfin ( Polydactylus sexfilis ), or moi. Aquaculture can provide a sustainable way to satisfy the demand for this Hawaiian delicacy, once...
Starksia blennies, small fish with elongated bodies, generally native to shallow to moderately deep rock and coral reefs in the western Atlantic and eastern Pacific oceans, have been well-studied for...
The Census of Marine Life - a ten-year effort by scientists from around the world to answer the age-old question, “What lives in the sea?” It was an international effort to asses the diversity,...
A blue cod and sea pens , a unique type of cnidarian , speckle the seafloor in New Zealand's Fiordland region.You can see more beautiful underwater photos from Brian Skerry in his image gallery .
The Goliath grouper, ( Epinephelus itajara ), is found in shallow tropical waters and reefs. They can reach sizes of 3 meters, and will eat crustaceans, other fish, octopi, and even sharks. The title...
For centuries, the Baltic Sea has provided European flounder ( Platichthys flesus ) and other fish for millions of people. Since the early 1980s, the nations surrounding the sea have coordinated...
Dampier was not able to collect specimens of fishes and other ocean life. But he had his shipboard artist carefully record the species that Dampier found new and unusual.
No two snowflakes are alike. Every snowflake is beautiful in its own way. But this one’s pretty creepy. The snowflake moray eel ( Echidna nebulosa ) has white, black and yellow splotches all over its...
If youngsters get cared for at all, the mother is usually involved. But in fish and a few other groups where eggs are not abandoned, fathers are the primary care providers. Males are sometimes such...
From parrotfish that cover themselves in a blanket of their own mucus to tiny pygmy sea horses, there are some bizarre sea creatures that live in coral reefs . In this slideshow you can explore some...
In 2003, a team of Japanese scientists analyzed the DNA of tapetails and whalefish. The results suggested that these two very different looking fishes were almost identical in one specific gene. But...
This fish’s tail looks like a long streamer. It lives near the ocean’s surface and grows only up to 45 mm (1.7 in) long. Find out how this fish was part of an international scientific mystery.
Hardy head silversides ( Atherinomorus lacunosus ) are abundant fish in shallow water seagrass meadows throughout the Indo-Pacific that often form shoals. They feed primarily on zooplankton and small...
Since the dawn of seafaring, humankind has had to deal with the pesky creatures that settle on ships—seaweeds, barnacles, and others that take advantage of the empty real estate provided by a clean...
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