Record-breaking deep-sea fish discoveries made by researchers and scientists.

Researchers have discovered a new species of snailfish swimming at a depth of over five miles below the ocean's surface off the coast of Japan, breaking the previous record for the deepest fish ever discovered. The fish was caught on camera by a deep ocean vessel in the Izu-Ogasawara trench, and belongs to the genus Pseudoliparis. The research team was exploring trenches off the Japanese coast with a baited unmanned craft known as a lander as part of a 10-year study into the deepest populations of fish on the globe.