This is one of those films that really does resonate. Using some phenomenal archive photography of the realm beneath the sea, Sir David Attenborough narrates a story of devastation, desperation and ultimately optimism as he takes us on a journey around the globe evaluating the damage caused to the Earth’s oceans by a mankind who has treated this vast resource with contempt ever since industrialisation enabled us to ignore the protective forces of nature and pretty much fish at will. Some of the imagery here is truly breathtaking. It’s beautiful, colourful and vibrant with creatures that look…