Fish

The robot is a bit slow moving at about 1.5 body lengths per minute. But the new design shows promise for future hybrid systems.

Engineers Built a Robotic Lionfish With an Energetic Bloodstream

The robo-fish pumps energy-packed liquid through vein-like tubes to move its fins and swim for hours

The tough little egg made it all the way through the digestive system of a coscoroba swan like this one.

A Swan Swallowed This Fish Egg, Pooped It Out—and Then 49 Days Later, It Hatched

The new study is one of the first to demonstrate fish egg dispersal via avian fecal matter

Nanoscale Structures Give Dragonfish Their Terrible, Invisible Teeth

Crystals in the enamel and an unusual interior structure render the giant teeth invisible, making the fish one of the deep seas's most fearsome hunters

The prehistoric school seems to adhere to the laws of attraction and repulsion, with members maintaining enough distance between neighbors without straying too far from the group

Did This Fossil Freeze a Swimming School of Fish in Time?

The 50-million-year-old slab of limestone suggests that fish have been swimming in unison for far longer than previously realized

Twice as Many Fishing Vessels Are Chasing Fewer Fish on the World's Oceans

Since 1950, the number of boats has gone from 1.7 million to 3.7 million, even though fish stocks have crumbled

This Prehistoric Fish Makes a Great White Look Like a Goldfish

Meet Dunkleosteus, perhaps the fiercest fish that ever existed

North Carolina's Offshore Shipwrecks Have Surprising New Tenants—Tropical Fish

As species are pushed north by climate change, the reefs may serve as a refuge for tropical and sub-tropical fish

Ocean-Dwelling Species Are Disappearing Twice as Quickly as Land Animals

Researchers point toward marine creatures' inability to adapt to changing water temperatures, lack of adequate shelter

Julie Packard (detail) by Hope Gangloff

Fishes Were Julie Packard’s Wishes for Her New Smithsonian Portrait

National Portrait Gallery unveils a painting honoring the renowned ocean conservationist and director of the Monterey Bay Aquarium

Scientists and ocean advocates are hoping to find a way to both protect sea turtles and other threatened species and help fishermen make a living.

How Scientists Are Using Real-Time Data to Help Fishermen Avoid Bycatch

Using a strategy called dynamic ocean management, researchers are creating tools to forecast where fish will be—and where endangered species won't be

Month-Long Oil Spill in the Solomon Islands Threatens World's Largest Coral Reef Atoll

Australia has stepped in to help contain the 600 tons of heavy fuel oil leaking from the transport that ran aground on Rennell Island early last month

Heat waves pose a significant threat to coral reefs, kelp forests and seagrass beds

Ocean Heat Waves Are Threatening Marine Life, Biodiversity

Over the past three decades, Earth’s number of annual ocean heat wave days rose by more than 50 percent

Bonneville Seabase is located 40 miles from Salt Lake City, Utah.

Why Utah Might Be Your Next Favorite Snorkeling Destination

Stocked with saltwater fish from around the world, Bonneville Seabase is an ocean in the middle of the state

Plastic debris is providing a new vessel for potentially invasive species to cross large distances.

Sea Creatures Still Arriving in the U.S. on Plastic Debris From the Japanese Tsunami Eight Years Ago

Marine biologists don't know how long different species can survive adrift in the open ocean, and some may become invasive when they reach new shores

Lake Malawi formed in a valley where the African tectonic plate is the process of splitting in two.

The Fishy Mystery of Lake Malawi

In the second-largest lake in Africa, fish evolution is taking place at an explosive rate. Why? Scientists are diving into the question

Can Fish Recognize Themselves in the Mirror?

A new study has found that the cleaner wrasse is capable of self-recognition—but does that mean it is also self-aware?

Sunflower sea stars in British Columbia, just weeks before wasting disease turned them to mush.

Why Almost All of the West Coast's Sunflower Sea Stars Have Wilted Away

A new study suggests most of the keystone predators have died off due to an unknown pathogen and increasing ocean temperatures

With just two rows of teeth, Edestus slid its lower jaw to slice apart its prey.

Scientists Model How Prehistoric Shark Cut Through Prey With 'Scissor Jaws'

The 330-million-year-old species <i>Edestus</i> had one of the most unique bites in natural history

“Courting Devil Ray Ballet” by Duncan Murrell

These Are the Best Practices for Underwater Photographers Hoping to Protect Marine Life

You can look—and even use flash photography—but don’t touch

Threatened Bluefin Tuna Sells for Record $3 Million in New Year's Sale

The 612-pound fish will go to a sushi restaurant, but without intervention the prized species will not be on the plate for much longer

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