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62 Results for "fish"

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Photos and details about the diversity of ray-finned fishes.

Check out these fascinating fish from Africa's lower Congo River.
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Ian Harrison first became interested in sea life during family vacations to the southwest coast of England.

Create a flounder fish that's hard to spot!
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For centuries, orange roughy went mostly unnoticed by humans. These fish thrived in the dark, the cold, and the intense ...
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Melanie Stiassny has been fascinated by fish from the time she was a little girl living in London. Today, Melanie is an ...

What kind of person becomes an ichthyologist, a scientist who studies fish?

What’s it like being a shark? Find out how these amazing fishes reproduce, eat, and stay safe.
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In 1938, fishermen off the east coast of Africa pulled up a strange creature in their nets.
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These tropical freshwater fishes come in so many colors, shapes, and sizes, it's nearly impossible to sum up the family ...
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Far beneath the ocean's surface is a mysterious world of cold temperatures, intense pressure, and almost total darkness....
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The striped bass has been a popular catch for fishermen for centuries. These fishes are known for their spiny fins and t...
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Most living things need oxygen to survive. Oxygen helps organisms grow, reproduce, and turn food into energy. Humans get...
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If you came face to face with a pacu, what would you do? Never fear -- the pacu may look like a big and scary fish, but ...

How do mammals move? Make flipbooks to see six different mammals in action.
Materials list and step-by-step instructions to create a flounder fish that's hard to spot.
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Bustling with a spectacular diversity of life, coral reefs are the rain forests of the oceans.
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Found along tropical coastlines, thick mangrove forests were once considered a nuisance, infested with mosquitoes and bl...
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The hellbender is one of the largest salamanders in North America.
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Most ocean plants and animals live near the shore, on a narrow ribbon of seafloor called the continental shelf.
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In college, Rob DeSalle wanted to study the narwhal, an Arctic whale with an eight-foot spiral tooth.
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With their white bellies and dark backs, dolphins can be found jumping above the water, swimming alongside fishing ships...
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The body of a sawfish may look like a fish, but its long, flat snout sets it apart. Rimmed with razor-sharp points, this...
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Estuaries are places where a river meets the sea. This ever-changing ecosystem is bursting with life. Saltwater from the...
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For over 1,000 years, people called the Inuit lived in the Arctic. Long ago, they relied on fishing and hunting for surv...
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All living organisms need energy to live. Organisms such as plants get this energy from the Sun. But animals get this en...

Dive into the oceans with an ichthyologist.
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Growing up in Argentina, Adriana Aquino loved nature, especially the ocean. As a young girl, she wondered what it would ...
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Dinoflagellates are tiny, one-celled organisms that live in oceans and freshwater ponds, rivers, and streams. Some dinof...
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The electric eel is long and narrow like an eel, but it is actually not an eel at all. In fact, electric eels are probab...
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The frigid waters of the Arctic and the Antarctic may seem like hostile habitats. But a variety of marine life -- from a...
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Like humans, animals need to communicate with each other. Through sight, touch, sound, smell, and even electrical pulses...
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This large dark bird is unmistakable soaring in the air along the coast.
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With vibrant colors and fantastic shapes, coral reefs are a breathtaking sight. These underwater structures are actually...
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It's easy to see how the starfish got its name -- with their pointed arms, these creatures look like stars fallen to the...
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With its long, dramatic crest, the giant Pteranodon longiceps is easy to recognize.
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The most dazzling feature on many pterosaurs was a spectacular head crest. Tupuxuara leonardii had one of the most impre...
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Hundreds of years ago, European sailors placed carved mermaids on the front of their ships as figureheads and told tales...
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Many animals and plants use color to warn predators to stay away, and the blue ringed octopus is no exception. When this...
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That toothy grin might make you think this is a crocodile or an alligator. But the Yacaré caiman is neither. Caimans are...
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Animals swim, walk, crawl, slither, squirm, and even fly through the air. They can catch free rides by attaching themsel...
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Most amphibians start their lives in water, and grow up to live on land. But axolotls live their whole lives in water. T...
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Confuciusornis is the earliest-known toothless, beaked bird.
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The oceans are filled with creatures that use poison to survive. Some use chemical defenses to deter predators. Others, ...
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Even though this whale of a whale weighs many tons, the humpback whale can make acrobatic leaps out of the water!
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The Portuguese man-of-war is actually a floating colony of individuals called polyps that are all dependent on each othe...
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With its furry coat, friendly face, and playful nature, the sea otter is perhaps one of the most endearing animals in th...
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The giant squid is the largest invertebrate, or animal without a backbone, ever to have lived on Earth! 
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This theropod belonged to a group called ornithomimids, also called "ostrich-mimics." 
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The American crocodile has lived on Earth for millions of years, but today their numbers are rapidly declining because t...
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Tipping the scales at more than 7 pounds, the Goliath is the largest frog in the world. Just two of these frogs weigh as...
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From waves to waterfalls, water is usually on the move. And that means it has energy. When this energy is captured and t...
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During the 13th and 14th centuries, a group of people called the Aztecs flourished in Mexico. They built an advanced civ...
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What do we have in common with sharks, bluebirds, lizards, and toads? We are all vertebrates, or animals with backbones....
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The blue whale is the largest animal ever to have lived on Earth.
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Plankton are the microscopic organisms of the sea. Just as plants form the basis for the ecosystem on land, phytoplankto...
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All animals of the sea depend on plankton, the tiny organisms that drift in the ocean.
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If you watched an American black bear lumbering through the forest, you might not notice anything unusual about how it m...
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The first vertebrates to fly took to the skies about 215 million years ago. These creatures were neither birds nor bats....
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One look at Redondasaurus, and you might think it's a crocodile. After all, it has a similar long, armored body, with a ...
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The snowy egret is a beautiful sight. An adult egret is distinguished by its dark slender beak, long black legs, and yel...
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You can tell a hammerhead shark by its wide head with eyes on the ends.