The deep blue. The abyss. The glaring nothingness. How often have you looked at the sea and thought, I wonder what’s down there?

We all know of the ocean: stormy waters, white sand beaches and reefs – but how much do we really know about it?

With an average depth of 4,000 metres, much of the sea was thought to be barren and void of life, but a remarkable community of life forms exist down under, from giant glowing squid to sharks older than our great-great-great-grandparents – the Greenland shark can live for between 200 and 500 years and so has the longest ...

 

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