Sharks

Chilean devil rays swim in the Atlantic Ocean near the Azores. 

What Are Scientists Learning About the Deepest Diving Creatures in the Ocean?

Animals-turned-oceanographers are helping biologists find out what they do when they get to the cold, dark depths

Located alongside New Jersey’s southernmost point, Cape May is a stunning Victorian shore community that once played a role in guiding Black enslaved laborers to freedom.

The 15 Best Small Towns to Visit in 2022

From the alleged birthplace of Paul Bunyan to the original gateway to Yellowstone, these towns are buzzing with activity

Researchers used the teeth of 13 megalodon sharks and 20 modern great white sharks to analyze dietary signatures and their trophic levels or where they fit in the food chain. (Pictured: a megalodon tooth on the left next to a great white shark tooth on the right)

Great White Sharks May Have Driven Megalodons into Extinction

Scientists analyzed zinc isotopes in fossilized teeth and found both sharks may have competed for the same food

A 2015 expedition found two species of sharks living in the hot, acidic water near Kavachi, thus earning it the nickname "Sharkcano."

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NASA Snaps Photos of Underwater 'Sharkcano' Erupting

Kavachi, a submarine volcano in the southwest Pacific Ocean, is home to several species of sharks and fish that can withstand the extreme environment

Whale sharks are the largest fish on Earth.

Cargo Ships Are Killing Whale Sharks

New research shows these gentle giants are often on a collision course with large ocean vessels

Greenland Sharks are found in the cold deep-water habitats of the Arctic and North Atlantic Oceans about 2,200 meters (about 7,200 feet) below the surface.

A Brain Infection Likely Killed 100-Year-Old Greenland Shark Washed Ashore in England Last Month

It is the first known case of meningitis in the species

Draughtsboard sharks apparently snooze with their eyes open or closed depending on the amount of surrounding light.

Sharks Apparently Do Sleep, Even With Their Eyes Wide Open

Scientists observed sleep in draughtsboard sharks by analyzing the animals' metabolism and posture

Reconstruction of a full-scale megalodon and a set of teeth at the Museo de la Evolución de Puebla in Mexico.

The Biggest Megalodons Likely Lived in Cold Waters

The common idea that the giant sharks could reach over 60 feet in length should be applied mostly to populations that lived in frigid environments

The second most common species the researchers identified was the silky shark, a vulnerable species that is in decline worldwide. 

Endangered Shark Meat Might Be Hiding in Your Pet's Food

Researchers found about one third of animal feed samples taken in Singapore contained shark DNA

Only in recent decades have researchers found that the fish have been gliding through the sea floors for hundreds of millions of years.

Rare Baby Ghost Shark Caught in New Zealand's Chatham Rise

There are about 52 known species of chimaera, half of which were discovered in the last two decades

Researchers attached green LED lights along the gillnet float line to keep unwanted marine animals from getting stuck.

Innovation for Good

Lit-Up Fishing Nets Dramatically Reduce Catch of Unwanted Sharks, Rays and Squid

Decorated nets entrapped fewer undesirable animals without significantly impacting the amount of target fish caught

A tiger shark swims in the Bahamas. Over the past several decades, the predators ventured farther north in the northwestern Atlantic Ocean.

Some Tiger Sharks Are Migrating Farther North Due to Climate Change

The predator’s movements in the Atlantic Ocean could scramble ecosystems and endanger the sharks by sending them outside marine protected areas

A CT scan of the spiral intestine of a Pacific spiny dogfish shark (Squalus suckleyi). The organ begins on the left and ends on the right.

Innovation for Good

Ten Scientific Discoveries From 2021 That May Lead to New Inventions

From nanobots to cancer treatments, nature inspires a wide variety of innovations

Sharks have been on the planet for close to 500 million years and, in that time, have developed an extraordinary immune system with immune mechanisms that mammals do not have.
 

How Shark Antibodies Could Aid the Fight Against Coronavirus and Prepare for Future Outbreaks

The protein-like immune molecules were found to block SARS-Cov-2 from entering human cells

A humpback whale and her calf swim underwater. A recent study in Nature found whales eat and poop way more than previously thought—and that feces plays an important role in fertilizing the ocean.

The Top Ten Ocean Stories of 2021

From the discovery of a large bioluminescent shark to the use of an innovative drone to study hurricanes, these are the best marine stories of the year

One reader wonders why more flowers and fruits aren't blue-hued.

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Why Are So Few Flowers and Fruits Blue? And More Questions From Our Readers

You've got questions. We've got experts

The embryo of a small-spotted catshark, safe inside its egg case, is being raised at the aquarium Oceanogràfic València by Associació Lamna, a nonprofit that promotes shark conservation and research. At this stage, the young shark's gills are still external and it is growing from the sustenance provided in the yolk, visible at the bottom of the egg case.

Biologists Rescue Unborn Baby Sharks at Fish Markets

Scientists are collecting egg cases from recently caught pregnant sharks, raising the babies and releasing them into the wild

Hammerhead sharks have are considered critically endangered.

More Than a Third of Shark Species Are Now Threatened With Extinction

Overfishing, habitat loss and climate change are behind the 'desperate' decline

A 3D image of the spiral-shaped intestine of a Pacific spiny dogfish shark. In life, food would move through this intestine left to right.

Innovation for Good

Sharks' Intestines Spiral Like a Valve Invented by Nikola Tesla

Tesla's ingenious valve promoted a one-way flow of fluid without the need for moving parts, but, it turns out, evolution got there first

An Atlantic White Shark Conservancy boat and crew work to tag a great white shark in the waters off the shore in Cape Cod, Massachusetts on July 13, 2019.

Can New Tools Help Beachgoers Predict the Likelihood That a Shark Is Nearby?

Great whites have returned to Cape Cod, and efforts are underway to help people coexist with them

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