779 results
779 results for: Sharks
- Paleontology
Megalodon sharks may have become megapredators by running hot
O. megalodon sharks were warm-blooded megapredators. But colder-blooded great white sharks may have had an evolutionary edge when food sources dwindled.
- Animals
These are our favorite animal stories of 2023
Spiders that make prey walk the plank, self-aware fish and a pouty T. rex are among the critters that enchanted the Science News staff.
- Climate
Plants might not hold on to carbon as long as we thought
Radiocarbon from bomb tests reveals that plants store more carbon than previously estimated in leaves and stems, which are vulnerable to degradation.
- Animals
Why some hammerhead sharks seem to ‘hold their breath’ during dives
Scalloped hammerhead sharks in Hawaii seem to limit the use of their gills during deep dives to prevent losing heat to their surroundings.
- Animals
Migratory fish species are in drastic decline, a new UN report details
The most comprehensive tally of how migrating animals are faring looks at more than 1,000 land and aquatic species and aims to find ways to protect them.
- Oceans
‘Jet packs’ and ultrasounds could reveal secrets of pregnant whale sharks
Only one pregnant whale shark has ever been studied. New underwater techniques using ultrasound and blood tests could change that.
- Animals
Fish beware: Bottlenosed dolphins may be able to pick up your heartbeat
Fish, sharks and platypuses are adept at sensing electrical signals living things give off. Bottlenosed dolphins make that list too, studies suggests.
- Animals
These devices use an electric field to scare sharks from fishing hooks
SharkGuard gadgets work by harnessing sharks’ ability to detect electric fields. That could save the animals’ lives, a study suggests.
- Oceans
Sharks face rising odds of extinction even as other big fish populations recover
Over the last 70 years, large ocean fishes like tuna and marlin have been recovering from overfishing. But sharks continue to decline toward extinction.
- Ecosystems
Tiger sharks helped discover the world’s largest seagrass prairie
Instrument-equipped sharks went where divers couldn’t to survey the Bahama Banks seagrass ecosystem.
- Animals
One mountain in Brazil is home to a surprising number of these parasitic wasps
Darwin wasps were thought to prefer temperate areas. But researchers scoured a mountain in the Brazilian tropics and found nearly a hundred species.
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The animal kingdom never ceases to amaze
Editor in chief Nancy Shute revels in the wonder of animals, from psychedelic toads to extinct pterosaurs.
