"Our planet is a blue planet: over seventy percent of it is covered by the sea. In 2018 a newly-discovered species of phytoplankton ( Syracosphaera azureaplaneta) was named by scientists in honour of the programme, and in recognition of David Attenborough's contribution to promoting wider understanding and awareness of the oceanic environment. When first transmitted on BBC One, over 12 million people watched the series and it regularly achieved an audience share of over 30%. One of them enabled the crew to dive over a mile into the San Diego trench, where the carcass of a 40-ton gray whale had been placed to attract a large variety of scavengers. Filming in the deep ocean required the use of special submersibles. Meanwhile, in Monterey Bay, orca were documented attacking gray whales and killing a calf. Near the coast of Natal in South Africa, the team spent two seasons attempting to film the annual sardine run, a huge congregation of predators such as sharks and dolphins, that assembles to feast on the migrating fish by corralling them into "bait balls". Off Mexico, the behaviour of a flock of frigatebirds guided the cameramen to a group of sailfish and marlin: the fastest inhabitants of the sea. After six weeks, the crew chanced upon a school of spinner dolphins, which in turn led them to a shoal of tuna. The open ocean proved more difficult and over 400 days were spent in often unsuccessful filming trips. The camera team spent three years on standby, using a microlight to land on the water nearby when they finally caught up with the creatures in the Gulf of California. The producers were helped by marine scientists all over the world with state-of-the-art equipment.īlue whales – whose migration routes were previously unknown – were located by air, after some of the animals had been given temporary radio tags. Besides witnessing some animal behaviours for the first time, the crew also observed some that were new to science. The fact that most of the ocean environment remains a mystery presented the production team with many challenges. The series took almost five years to make, involving nearly 200 filming locations. Attenborough narrated this series before presenting the next in his 'Life' series of programmes, The Life of Mammals (2002), and the same production team created Planet Earth (2006).Ī sequel series, Blue Planet II was aired on BBC One in 2017. The executive producer was Alastair Fothergill and the music was composed by George Fenton. The series won a number of Emmy and BAFTA TV awards for its music and cinematography. The underwater photography included creatures and behaviour that had previously never been filmed. It is narrated by David Attenborough.ĭescribed as "the first ever comprehensive series on the natural history of the world's oceans", each of the eight 50-minute episodes examines a different aspect of marine life. It premiered on 12 September 2001 in the United Kingdom. Our Sun and the nearest star to our Sun, Alpha Centauri, appear as two faint stars near image center.The Blue Planet is a British nature documentary series created and produced by the BBC. High-altitude clouds, laced with silicates, may blow from the day side to the night side at 4,500 miles per hour.īecause the planet is only 63 light-years from Earth, a visitor would see many of the same stars we see in our nighttime sky, though the constellation patterns would be different. In 2007 NASA's Spitzer Space Telescope made a thermal map that identified the presence of an early afternoon hotspot on the planet, as shown here. The planet is so close to its star that it is gravitationally "tidally locked" so that one side always faces the star and the other side is always dark. The planet HD 189733b was discovered in 2005 and is only 2.9 million miles from its parent star. This color is not due to the presence of oceans, but is caused by the effects of a 2,000-degree-Fahrenheit atmosphere where silicate particles melt to make "raindrops" of glass that scatter blue light more than red light. NASA's Hubble Space Telescope measured the actual visible-light color of the planet, which is deep blue. This illustration shows a hot-Jupiter-class planet orbiting its yellow-orange star, HD 189733.
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