For more than 60 years, the ginkgo-toothed beaked whale (Mesoplodon ginkgodens) was one of the ocean’s greatest mysteries.

Scientists have finally photographed a whale known only from sounds and remains, linking a mysterious deep-sea signal to a ...

Deep below sunlight, a rarely seen frilled shark reveals ancient anatomy, slow reproduction, and mysterious habits, offering ...

The Caribbean Sea is often associated with crystal-clear water, vibrant coral reefs, and post-card perfect beaches. But ...

Giant phantom jelly sightings are extremely rare, but recent footage shows this extraordinary deep-sea jellyfish in all its ...

Eerie yet fascinating footage shows the 10-metre-long sea creature gently pulsing and swirling its way through the dark ...

According to new research recently published in the journal Nature Communications, the Greenland shark retained its visual ...

The frilled shark is one of the most unusual predators ever documented in the deep ocean. Its body shape, teeth, and movement ...

These "total monsters of fishes" are extinct today, though new clues about their lives come from CT scans and their closest ...

Deep sea holds alien-like species. The frilled shark, a living fossil, remains a mystery. Its unique anatomy includes six ...

Killing the protected animals may be the only way to stop them from eating too many of the Pacific Northwest’s endangered ...

Read how ancient Greenland sharks' bodies preserve their eyesight for hundreds of years and what this means for older humans.