Not all sharks are cold-blooded killers—some are warm-blooded killers, and recent research helps elucidate why. A new study published June 30 in the scientific journal Functional Ecology considered ...

July 1 (UPI) --Most fish are cold-blooded, but some warm-blooded fish have evolved the ability to regulate their own body temperatures. For decades, scientists have debated the evolutionary advantages ...

For over 50 years now, scientists have known that, despite their reputation, not all fish are cold-blooded. Some shark and tuna species, the white shark and the Atlantic bluefin tuna, have evolved the ...

New research from marine biologists offers answers to a fundamental puzzle that had until now remained unsolved: why are some fish warm-blooded when most are not? It turns out that while (warm-blooded ...

The opah, long believed to be yet another sluggish deep-water denizen, is revealed as speedy predator because of peculiar mechanisms that warm its blood. Opah image captured by ©Ralph Pace during a ...

WASHINGTON - Move over, mammals and birds, and make room for a fish called the opah in the warm-blooded club. Researchers said in the journal Science on Thursday that this deepwater denizen is the ...

While tuna and a few sharks, like the Mako and great white, have the ability to warm swimming muscles when needed to move fast, and other fish, such as swordfish, marlins, and sailfish are able to ...

Basking sharks can maintain a body temperature that is higher than their environment, putting them among a small group of fish species that are warm-blooded. Out of around 35,000 species of fish, only ...

It is widely appreciated that the ocean holds many phenomena that we do not know or understand, now, researchers have answered one question about the warm-blooded nature of some ocean dwellers. Most ...

For over 50 years now, scientists have known that, despite their reputation, not all fish are cold-blooded. Some shark and tuna species, the white shark and the Atlantic bluefin tuna, have evolved the ...

New research from marine biologists offers answers to a fundamental puzzle that had until now remained unsolved: why are some fish warm-blooded when most are not? It turns out that while (warm-blooded ...