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In the spring of 2011, a research crew from Oceana spent two months in the brackish Baltic Sea . The Baltic faces challenges from pollution, algae blooms, over fishing, and invasive species. Oceana researchers...
Boats Connect Us to the Ocean More than any other objects, boats symbolize...
CREDIT: Wikimedia User “Fisherman” Because of consumer demand for sashimi (a...
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Have you ever seen a creature so unusual? This fish (22 cm long) is called a...

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The Sargassum frogfish Histrio histrio (Antennariidae) is a small but voracious predator - it can ingest animals up to it’s own size! The fins of the frogfish are perfect for creeping around in the algae and stalking unsuspecting...
The Pacific hagfish ( Eptatretus stoutii ), a fish that looks similar to an...
Under white light, this shortnose greeneye fish ( Chlorophthalmus agassizi...

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Dr. Carole Baldwin never expected to find seven new species of fish among the Starskia blennies she was studying at the...
Are these three fish related? All three—a whalefish, bignose, and tapetail—became the prime suspects in an international scientific mystery. Each species seemed to be missing either a member of the...
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...
Two large coral trout ( Plectropomus leopardus ) swim through a coral reef on Taveuni Island in Fiji. Coral trout are highly desired fish for human consumption, and because of overfishing, are...
With gnarled teeth and a perpetual frown, the sea wolf is a creature out of our nightmares! But despite its fearsome look, it isn't a danger to humans, largely preying on whelks, crabs, and sea...
A pair of French Angelfish ( Pomacanthus paru ) swim off the coast of Brazil. This species demonstrates a rare quality among ocean fish: mating pairs appear to spend extended time together, defending...
The ocean is home to many moms of all shapes and sizes: from charismatic polar bears and dolphins to small fishes and shrimps and more. Learn about some of the diverse parenting habits of marine moms...
The Palauan primitive cave eel ( Protanguilla palau ) has an evolutionary history that dates back some 200 million years . Because of this and the fact that it has retained some primitive features,...
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...
This guineafowl moray ( Gymnothorax meleagris ) is one of about 200 species of moray eels found in tropical and subtropical coral reefs . Moray eels are a type of bony fish. Many species, like this...
by Emily Frost CREDIT: Kevin Rolle Albatrosses Get ‘Romantic’ to Increase Chick Survival Albatross relationships seem especially relatable to humans. These long-lived and highly-endangered birds will...
This map is based on electronic tagging of Atlantic bluefin tuna ( Thunnus thynnus ) from 1996 to 2007. A team of international researchers officially classified the Atlantic bluefin as endangered in...
Much like our friend the seahorse , the males of this fish raise the young. As you can see in the photograph above, the male has his clutch of eggs in his mouth. This species ( Opistognathus...
Check out the eyes on these Hawaiian squirrelfish ( Sargocentron xantherythrum )! Because squirrelfish are almost entirely nocturnal, they need big eyes to absorb as much moonlight and starlight as...
Follow a journey with satellite tags placed on bull sharks and tarpon. Both of these large predatory fish are found in coastal in-shore ecosystems and the two species have similar diets. If given the...
Under white light, this shortnose greeneye fish ( Chlorophthalmus agassizi ) looks unimpressive. But, in dim blue light—the type usually seen at depth—it shows its true fluorescent colors. NOAA...
Deep-sea species like this dragonfish ( Bathophilus indicus ) live in cold, dark waters and may go weeks or months between meals. When food is found, the fish uses its impressive teeth—including some...
Two bright orange anemonefish ( Amphiprion ocellaris ) poke their heads between anemone tentacles. Anemonefish are able to swim amongst the stinging tentacles without getting stung — but no one knows...
One of the first signs of a sick coral reef is seaweed creeping across the corals, stealing their precious sunny real estate. Healthy corals, however, aren't completely hopeless: in some reefs, small...
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