A team of 364 scientists who were studying the habits of ocean creatures,spent about 123 hours each underwater.How many hours in all did they spend underwater?
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The oceans cover 70% of the surface of our planet, and yet they are still the least explored,” says Sir David Attenborough in the opening sequence of the recent BBC documentary series Blue Planet II. “Hidden beneath the waves, there are creatures beyond our imagination.” Yet while the programme reveals the wonders of many of these species, an incredible number more have never been encountered by humans at all.
In fact, we don’t even know how many species exist in the oceans. Most estimates were made before we even had any inventory of how many had been scientifically named – they have ranged from 0.3m to an astounding 100m. Numerous new marine species are discovered every year – yet working out how many species there are in total (and so how many more we need to describe) is a much more difficult process. But now we at least have the essential foundation of knowing how many marine species have been named, thanks to a decade-long collaborative effort by hun