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.

The deep sea is a distinctive environment, distinguished from surface waters by darkness, cold and immense pressures. Global data reveal how much more connected deep-sea life is than life in the ...

Bizarre creatures like vampire squid and blobfish make their home in the dark, cold, depths of the deep sea, but most of this watery realm remains a complete mystery. That's because humans have seen ...

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 ...

Humanity has only explored 0.001% of the deep sea, according to a May 2025 study.Getty Images Reporter The Trump Administration signed an executive order late last month aiming to fast-track approval ...

A new study claims that we know more about the surface of Mars than we do about our own oceans. Despite covering over 70% of Earth's surface, the vast majority of the deep sea remains unexplored. In ...

Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.