Scientists have discovered 12 new species from the lowest depths of the Atlantic Ocean.
Researchers say the sea mosses, molluscs and corals have previously gone undetected because so much of the seafloor has yet to be explored.
The species live up to 400 metres below the surface of the oceans on black corals.
The team from the EU-funded Atlas Project also said that it found dozens of species in areas where they were previously not known to exist.
But the new discoveries may already be under threat from climate change.
As more carbon dioxide is absorbed by the planet s oceans - the waters become more acidic, threatening the species habitats.