While exploring the depths of the ocean off the coast of Japan, scientists caught a glimpse of a five-armed yellow creature situated among a rocky ground. The researchers were searching for wildlife ...

Far below the ocean’s surface, where sunlight disappears and pressure reaches crushing levels, some of the planet’s strangest ...

Spectacular fluorescence has been spotted in 27 species that we didn't previously know were capable of glowing in the dark. The discoveries were made during a three-year study in the Red Sea in Egypt ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet initiative has ...

Few have explored the ocean’s deepest depths – but those rare few have shared images of the strangest, most mysterious ...

BUENOS AIRES, Argentina (AP) — Transparent-faced fish drift through dusky waters. Snowlike flecks of dead plants sift down from the world above. Soft sponges peek through the soot of the seafloor.

(CNN) — Ancient glass sponges. A Barbie-pink sea pig sauntering along the seafloor. A transparent unicumber hovering in the depths. These wonders are just an initial snapshot of fantastic creatures ...