Ghost sharks are cartilaginous fish, related to sharks and rays ... although their exact size remains unclear. "Their deep-sea habitat makes them difficult to study and monitor, so we know ...

Look, here comes a blobfish! This thrilling deep-sea fish was voted the world's ugliest animal by the Ugly Animal Preservation Society. But its jelly-like skin looks much more natural at 900 meters.

It encompassed nearly the entire depth range of deep-sea fish habitats (1,218–7,730 meters) and yielded 11 deep-sea fish species from six major groups. By analyzing genetic data from these deep ...

A deep-sea neutrino telescope has detected the most energetic neutrino ever recorded. The particle, known as a "ghost particle," was about 30 times more active than the previous record-holder.