From polygamous tree toads to heavy stick bugs, this year’s extensive new species discoveries are changing the way we see our ...

Scientists have uncovered why big predators like sharks spend so much time in the ocean’s twilight zone. The answer lies with ...

Recent scientific expeditions have unveiled a trove of new species dwelling at the bottom of the ocean, including a carnivorous “death ball” sponge in the Southern Ocean. In a separate deep-sea ...

The fish was found at 200 to 2,000 meters below the surface. At least 16 types of recently discovered deep-sea fish are among the darkest creatures ever found, according to a study published Thursday.

University of Victoria (UVic) biologists have discovered that even closely related fish species make unique and distinctive ...

A deep-sea fish species with unusual cheek patterns has been discovered in the South China Sea after it was listed on online seafood markets. The fish has been named Branchiostegus sanae because its ...

Fish is part of the holiday feast in many families at Christmas. But which fish can be put on your plate this year without a guilty conscience? The good news: Some classics are "green" again.

"It's a whole new way of looking at what's in the ocean." In this undated file photo, a large group of yellowfin tuna is shown in the waters off Vibo Valentia, Calabria, Italy. Giordano Cipriani/Getty ...

Tuna, opah, and billfishes such as marlins and swordfish are among the 0.1% of fish species that are warm-blooded. Evidence by an international team of researchers led by UC San Diego’s Scripps ...