MOSS LANDING, CA--Throughout the world ocean, animals congregate at certain depths, forming layers that can be hundreds of meters thick and may extend horizontally for dozens or even hundreds of ...

Risso’s dolphins have been observed to perform a rapid sprint coupled with a spin when starting a dive, even though this highly energetic movement costs considerably more energy than normal, much ...

Mesopelagic fishes—the small fishes living in the ocean’s twilight zone—form one of the most characteristic features of the open ocean: the deep scattering layer at depths between 200 and 1,000 m, ...

In World War II, naval sonar operators spotted something strange: a 'false seafloor' hundreds of metres below the surface of the water, that mysteriously moved closer to the surface at night. They ...