The deep ocean makes up 95% of habitable Earth, yet only 0.0001% has been explored. The Guardian joined a mission off Bermuda that is looking to unlock the secrets of the deep
Video: a dive into Bermuda’s hidden depths
The largest migration on Earth is very rarely seen by human eyes, yet it happens every day. Billions of marine creatures ascend from as far as 2km below the surface of the water to the upper reaches of the ocean at night, only to then float back down once the sun rises.
This huge movement of organisms – ranging from tiny cockatoo squids to microscopic crustaceans, shifting for food or favourable temperatures – was little known to science until relatively recently.
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Source: Guardian Environment