A vast marine desert stretching kilometres deep, the Big Blue is the world’s greatest wilderness and is home to some of the biggest and most spectacular creatures on earth.
Tonight David explores the Big Blue. We see Sperm whales, baby turtles and jellyfish and watch feeding frenzy of 90kg tuna and dolphins smashing through the lantern fish shoals turning the sea white with foam.
We also learn what it takes the biggest fish on the block – the whale shark – to raise its young in this blue dessert and to finish of the program; the shocking revelation of what millions of tonnes of plastic is doing to our oceans.
Big Blue, Sunday, 8 pm – BBC One