Fish

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See a Google-Earth-Like View of an Embryo, Down to an Individual Cell

A new technology combines thousands of individual images to create a zoom-able picture of living tissue, down to the cellular level

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Ocean Acidity Rivals Climate Change As Environmental Threat

Rising ocean acidity is now considered to be just as much of a formidable threat to the health of Earth’s environment as the atmospheric climate changes

Osprey Reef, one of five reefs that will have have full national park-level protection in Australia.

Australia Creates World’s Largest Marine Reserve Network

The plan will protect the Coral Sea as well as pygmy blue whale habitat off the southern coast of Western Australia

The ocean sunfish is the heaviest bony fish in the world; it can grow more than 10 feet long and pack on a whopping 5,000 pounds, and yet its flat body has no real tail to speak of.

Unraveling the Mysteries of the Ocean Sunfish

Marine biologist Tierney Thys and researchers at the Monterey Bay Aquarium are learning more about one of the largest jellyfish eaters in the sea

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The Sawfish is a Great Slasher

This ray uses its toothed rostrum not only to detect its next meal, but also to attack and impale its prey

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Fish “Scary Stuff” Alarm Call Deciphered

A newly identified brain circuit could be responsible for driving innate fear responses in many species

Top: The ninespine stickleback, Pungitus pungitus, is typical of the saltwater form. Bottom: A freshwater form of stickleback with fewer bony plates and fewer spines.

What Robot Fish Can Tell Us About Parallel Evolution

When housed in an aquarium with a swirling robotic school, what determines whether a fish will join the crowd?

A good eye will spot the black-marble jawfish next to the mimic octopus's arm

Fish Mimics Fish-Mimicking Octopus

The black-marble jawfish takes advantage of its coloring to blend in with an octopus and stay safe from predators

A great white shark off the coast of South Africa

The Secrets of a Shark Attack

In an attack against a Cape fur seal, a great white shark's advantage comes down to physics

Yellow saddle goatfish

The Fish That Hunt Like Lions

Yellow saddle goatfish collaborate when one finds prey to chase

A leatherback turtle is just one of many predators in the ocean

Where the Pacific’s Predators Go

Scientists have found that predator species trade off between prey availability and water temperature in their travels

If you call someone a piranha, first make sure you've got the right fish

Find Your Fishy Metaphor

We've all used a fishy metaphor in the past, but use the wrong one and you can look pretty stupid

Asian carp, imported from China in 1973 to clean algae from Southern ponds, broke from their confines and infested the Mississippi River waterways.

Making the Best of Invasive Species

Garlic mustard and Asian carp can wreak havoc on their ecosystems, but do they have a future on your dinner plate?

Kemp's ridleys are the world's smallest sea turtles and are also the most endangered.

North America’s Most Endangered Animals

Snails, marmots, condors and coral reef are among the many species on the continent that are close to extinction

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The Shark That Will Give You More Nightmares Than Jaws

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A Colorful Zebrafish

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The Mimic Octopus

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How Sharks Sniff Out a Meal

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Photo Contest Finalist—A Chorus of Mackerel

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Picture of the Week—Young Fish Dart by a Jellyfish

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