WWF International on Instagram: "In Sir David Attenborough’s lifetime, our ocean has gone from a complete mystery to what we now know is the most important place on Earth. In this new clip from #OceanFilm, he remembers his first time scuba diving – witnessing the breathtaking beauty and miraculous variety of life beneath the water. For people and the planet, we must safeguard the ocean. #UNOC @Silverback_Films @OpenPlanetOrg"