Researchers laud return of giant tuna to North Sea after being fished almost to point of extinction

ALT: Callipterus Cichlid Collecting Shell

Seeds from the last toromiro, unique to remote Easter Island, were taken away in the 1960s. Now, after a crucial discovery gave hope for its survival, it is making a return

The world's frozen oceans keep the planet cool, but they currently have less ice than ever recorded before.

Populations have been falling for decades, even in tracts of forest undamaged by humans. Experts have spent two decades trying to understand what is going on

The world's smallest porpoise—the vaquita (Phocoena sinus)—is on the brink of extinction. Endemic to the upper Gulf of California, it has dwindled to fewer than 19 individuals in 2023. The primary so...

A decade ago, up to 1,000 of the apex predators lived in one South African bay. Now they have gone, fleeing from killer whales. But the gap they have left creates problems for other species

Non-native pink salmon have swarmed Norway’s rivers, prompting a relentless—and potentially fruitless—fight to beat back the invaders.

Scientists surprised to find so many animals unknown to science in Alto Mayo, a well-populated region