8,233 results
8,233 results for: Fish
- Anthropology
Homo erectus, not humans, may have invented the barbed bone point
Carved artifacts excavated from Tanzania’s Olduvai Gorge suggest now-extinct hominids made barbed bone points long before humans did, researchers say.
- Environment
Invasive jumping worms damage U.S. soil and threaten forests
Also known as snake worms, these writhing wrigglers turn forest leaf litter into bare ground, changing soil composition and ecosystems as they go.
- Paleontology
A squid fossil offers a rare record of pterosaur feeding behavior
150 million years ago, a pterosaur attempted to snatch a squid from the ocean surface and lost a tooth in the process.
- Climate
Mercury levels in fish are rising despite reduced emissions
Climate change and overfishing can increase how much mercury accumulates in fish, counteracting efforts to reduce human-caused emissions.
- Paleontology
Cannibalism in the womb may have helped megalodon sharks become giants
The ancient sea terror Otodus megalodon may have grown to at least 14 meters long thanks to a firstborn pup’s predatory behavior, some researchers say.
- Life
Piranhas and their plant-eating relatives, pacus, replace rows of teeth all at once
Piranhas and pacus both lose and replace all teeth on one side of their mouths in one go, which may help to distribute wear and tear.
- Neuroscience
Both fish and humans have REM-like sleep
Sleeping zebrafish have brain and body activity similar to snoozing mammals, suggesting that sleep evolved at least 450 million years ago.
- Life
Why otters ‘juggle’ rocks is still a mystery
Shuffling pebbles really fast looks as if it should boost otters’ dexterity, but a new study didn’t find a link.
- Animals
Flamboyant cuttlefish save their bright patterns for flirting, fighting and fleeing
A new field study of flamboyant cuttlefish shows they don’t always live up to their reputation.
- Animals
Dolphins can learn from peers how to use shells as tools
While most foraging skills are picked up from mom, some bottlenose dolphins seem to look to their peers to learn how to trap prey in shells.
- Climate
Malin Pinsky seeks to explain how climate change alters ocean life
As global temperatures rise, Malin Pinsky’s research attempts to understand how marine ecosystems are changing and why.
- Oceans
The world’s fisheries are incredibly intertwined, thanks to baby fish
A computer simulation reveals how one nation's management of its fish spawning grounds could significantly help or hurt another country's catch.
