Have a great interest in the oceans? Now you can follow Blue Planet Ⅱ and take a journey to the Earth's oceans. Blue Planet Ⅱ is a British nature documentary series produced by the BBC Natural History Unit. "I am truly excited to be joining this new exploration of the underwater world, which covers most of our planet," says Sir David Attenborough, the father of the modern nature documentary, who returns as the teller."The oceans are the most exciting place to be right now, because new scientific discoveries have given us a new world of life underwater." The BBC spent four years filming on every continent and in every ocean. It will take you to the deepest but least known parts of our planet. It's said that 95% of the world's oceans are unknown. You will be surprised at seeing a dolphin spitting water, a fish that uses tools, and a hairy Hoff crab. The documentary will also take a close look at underwater volcanoes. However, you'll feel sad when you see these scenes; mother dolphins feeding their babies milk with dirt;man-made noise drowning out the natural sounds, which animals use to communicate. Many creatures are trying hard for their lives. Blue Planet Ⅱ not only provides us with a great chance to enjoy sea creatures, but also reminds us that this is the right moment for the health of the world's oceans.