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Biology

A juvenile spotted ratfish. These deep-sea fish are named for their long, rat-like tails.

This Deep-Sea Fish Has Teeth on Its Forehead—and It Uses Them for Sex

Researchers suggest the rows of pointed structures on the heads of spotted ratfish are true teeth, offering the first known example of teeth located outside the jaw

The bumpy snailfish (Careproctus colliculi) is one of three new deep-sea species described.

Cool Finds

Biologists Discover Surprisingly Cute Deep-Sea Fish Species Off the Coast of California

Meet the bumpy snailfish—described by scientists as “adorable”—as well as the dark snailfish and sleek snailfish, all of which thrive thousands of feet below the surface of the Pacific Ocean

A leatherback sea turtle hatchling climbs over sargassum on a beach. In a new study, researchers timed sea turtles to see how long it took them to reach the ocean when they had to traverse piles of seaweed.

Seaweed Piles Are Slowing Down Sea Turtle Hatchlings as They Make the Dangerous Trek to the Ocean

In Florida, large mats of sargassum are increasingly washing ashore, creating another obstacle for loggerhead, leatherback and green sea turtles, new research suggests

Two brothers of different species, produced by the same mother: Messor ibericus (left) and Messor structor (right).

These Ant Queens Seem to Defy Biology: They Lay Eggs That Hatch Into Another Species

Iberian harvester ant queens produce offspring of their own species and of the builder harvester ant, seemingly by cloning males

Researchers studied genetic samples from 483 mammoths, including from their tusks, bones, skin and molars (shown here).

Scientists Investigate the Bacteria That Colonized Extinct Mammoths—and Uncover the Oldest Known Microbial DNA From a Host

Some of the microbes might have been benign or helpful, while others could have caused deadly diseases

The 2025 map shows predictions for each week between September 1 and November 17.

See When Fabulous Fall Foliage Will Peak in Your State With This Interactive Map

Use the tool’s week-by-week, county-by-county predictions to plan your autumnal adventures—and make the most of the 2025 leaf-peeping season

An artist's interpretation of what early penguins in New Zealand might have looked like

Early Penguins Had Long, Dagger-Like Beaks for Skewering Fish, New Zealand Fossils Reveal

Paleontologists describe four new species of extinct ancestral penguins that help shed light on how the iconic birds evolved after dinosaurs went extinct

A new study examines how bees adapt to build honeycombs on top of various 3D-printed foundations.

Bees Manage to Build the Best Honeycombs, Even on Imperfect Foundations

In a new study, scientists tested how honeybees adapt to construct their hives on 3D-printed foundations of varying sizes

Pygmy seahorses are exceptional camouflage artists.

These Bumpy Little Seahorses Are Amazing Camouflage Artists. Scientists Pinpoint the Gene Loss Behind Their Special Traits

Bargibant’s pygmy seahorses look almost exactly like the gorgonian corals they live in, thanks in part to their unusually stubby snouts

Yagi (left) and Quinn (right) are searching for evidence of critically endangered Sumatran rhinos in Indonesia's Way Kambas National Park.

Two Sniffer Dogs Might Have Just Found a Lost Population of Critically Endangered Rhinos

Yagi and Quinn identified scat that was likely left by a Sumatran rhinoceros in Indonesia’s Way Kambas National Park, where scientists thought the animals had disappeared

The wide, basin-shaped pelvis of modern humans helps us walk upright on two legs and give birth safely to babies with large heads.

Scientists Discover Key Evolutionary Changes to the Pelvis That Helped Humans Walk Upright

A new study delves into the development of the ilium, the largest bone in the pelvis, and the genes that underpin its formation

The sailback houndshark was first described as a new genus and species in 1973.

Elusive Sailback Houndshark Rediscovered in Papua New Guinea After 50 Years

The creatures are occasionally caught by local fishermen but hadn’t been scientifically recorded since the 1970s

The teeth specimens were collected from discarded teeth at the Sealife Oberhausen aquarium in Germany.

Sharks’ Teeth Could Suffer Damage as Ocean Acidification Intensifies, Study Suggests

Higher concentrations of carbon dioxide in the atmosphere are leading to a drop in ocean pH, a change that might eventually make it harder for sharks to eat their prey

Researchers find that long thumbs in primates are consistently associated with big brains.

This Is What Our Thumbs Say About Our Brains, in a Pattern That Holds True for Other Primates

Researchers have found a link between long thumbs and big brains, suggesting the two features evolved together

Aside from his bright blue shell, Neptune is an otherwise normal lobster.

See the Rare ‘Electric Blue’ Lobster Found Off the Coast of Massachusetts

Meet Neptune, an American lobster with a vibrantly colored shell that results from a genetic mutation affecting pigmentation

Greater flamingos are abundant in the Camargue, a coastal region in southern France.

Migratory Flamingos Age Differently From Resident Ones, Offering a New Clue About Getting Old

A new study of the pink birds in France finds that aging sets in later for flamingos that migrate, though they face higher mortality in early adulthood

Scientists are eager to figure out why lead doesn't seem to affect brown anoles.

These Lizards Have So Much Lead in Their Blood, They Should Be Dead. Instead, They’re Thriving

Brown anoles around New Orleans have the highest blood concentrations of lead ever recorded in vertebrates—and scientists aren’t sure why they can survive it

The American robin was among the birds most affected by light pollution.

Light Pollution Is Making Days Longer for Birds, Extending the Hours When They’ll Sing

A new study looked at millions of recordings of birdsong and found that some species in areas with more light pollution are active for almost an hour longer than average

Researchers often observed a family of bats roosting together in tight "cuddle balls."

These Big, Meat-Eating Bats Also Have a Cuddly Side. Rare Videos Reveal ‘Hugging,’ Playing and Sharing Food

Scientists observed a family of four spectral bats in their roost in a tree in Costa Rica, capturing an inside look at their social behavior

Mexican tetras lost their eyes in multiple ways.

These Cavefish Lost Their Eyes, but They Gained Some Pretty Nifty Traits

Mexican tetras that got swept into pitch-black caverns had no use for the energetically costly organs

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