Planet Earth. Disc two
(DVD) 

Title from container and disc label.

Originally broadcast on BBC in March 2006.

Special features: Planet Earth diaries: Into the abyss, Wild camel chase, Alive in the freezer ; isolated score ; audio commentary for Caves.

Music composed by George Fenton ; music performed by BBC Concert Orchestra ; editors, Andy Netley, Dave Pearce.

Narrated by David Attenborough.

"From the highest mountains to the deepest oceans, Planet Earth illuminates the wonders of our astonishing world like never before. It s a celebration of the spectacular diversity of our planet, revealing the vast as well as the intimate as only high definition cinematography can."--Container.

Caves: Caves are remarkable habitats with equally bizarre wildlife. Cave angel fish cling to the walls behind waterfalls with microscopic hooks on their fins. Cave swiftlets navigate by echo-location and build nests out of saliva. The Texas cave salamander has neither eyes nor pigment. Planet Earth looks at this hidden world of stalactites, stalagmites, snotites and troglodytes. Among other underground wonders, features the Cave of Swallows in Mexico, a 400 metre vertical shaft, deep enough to engulf the Empire State Building, and the Lechuguilla cave system in the USA, 193 km long with astonishing crystal formations.

Deserts: Around 30% of the land's surface is desert, the most varied of our ecosystems despite the lack of rain. This program looks at deserts and their inhabitants all over the world. Saharan sandstorms reach nearly a mile high and desert rivers run for a single day. In the Gobi Desert, rare Bactrian camels get moisture from the snow. In the Atacama, guanacos survive by licking dew off cactus spines. The brief blooming of Death Valley triggers a plague of locusts 65 km wide and 160 km long. An aerial voyage over the Namibian desert reveals elephants on a long trek for food and desert lions searching for wandering oryx.

Ice worlds: The Arctic and Antarctic experience the most extreme seasons on Earth. This program looks at wildlife that survive and thrive in these regions. It reveals new science about the dynamics of emperor penguin behaviour in Antarctica. In the north, unique aerial images show a polar bear swimming more than 100km, and diving for up to two minutes at a time, and later attacking a herd of walruses. Among other animals, also features humpback whales.

DVD, region 1, NTSC, widescreen; Dolby digital 5.1.

In English, with optional English (for the hearing impaired), French or Spanish subtitles.