Seen from space, our Earth is bright blue in appearance. The source of that blue is the huge mass of water covering 70% of our world. It takes 20 hours just to cross the Pacific Ocean by plane. However, the secrets of the oceans, so strikingly blue when seen from above, actually lie hidden within its depths. As we dive down into these waters, which in some places can be even deeper than Mount Everest, we encounter a brightly coloured world. And millions of life forms, all completely different to one another. Show Less >>