Scientists have, for the first time ever, formally identified a totally new species in the deep sea.

The National Oceanic and Atmospheric Administration (NOAA) formally identified the new species of Duobrachium sparksae – a strange, gelatinous species of ctenophore - solely on high-definition video footage captured at the bottom of the ocean.

It took five years to have the gelatinous blob formally recognised as a new species.

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