Pelagic fishes include a diverse range of species that have evolved distinct physiological, behavioral and morphological traits for life in the open-water.

In the South China Sea, off China’s Hainan Island, researchers dropped the carcass of a cow about 5,340 feet down to the ...

It illustrates the constant evolutionary arms race between predator adaptations, like powerful jaws and teeth, and prey ...

As the climate warms, scientists expect animals and plants to move to cooler areas—uphill, toward the poles, or into deeper waters. But in a surprising twist, scientists have found that over a third ...

Some fish species, particularly the blacktip grouper, appeared to let others do the heavy lifting while they waited around for food. In response, the octopus would lunge at them.