Humans have been exploring the deep seas, which make up 66 percent of our planet’s surface, for decades. But a new study reveals just how far we have left to go in understanding the mysterious ...

Dive in and meet some of the most stunning deep-sea animals that MBARI encountered in 2025. This year, our team spotted ultra-black fishes, sinuous siphonophores, curious crabs, spectacular sponges, ...

We know next to nothing about 99.999 percent of the seafloor. How one researcher plans to democratize deep-sea exploration. Katy Croff Bell, who has been an ocean researcher for 25 years, is working ...

A brooding mother octopus shelters her eggs behind two different types of corals. The image was made by pilots using a robot to explore the north wall of the Mar Del Plata submarine canyon in ...

Dumbo octopuses, like the Opisthoteuthis agassizii seen here during a 2019 dive, are the deepest-living group of octopuses known. NOAA Office of Ocean Exploration and Research, 2019 Southeastern U.S.