Planet Earth Ice Worlds online movie

Nowhere else on Earth is seasonal change so extreme. It causes the ice to advance and retreat every year and all life here is governed by that. When the first polar explorers headed south giant cathedrals of ice marked their entry into uncharted territory. Passing the towering spires they must've wondered what unearthly sights lay in store. As they battled on the ice became increasingly dominant but nothing could have prepared them for the ice world that finally loomed into view. Terra incognita - the unknown land. At the southernmost extreme of our planet the continent of Antarctica is as large as the United States of America. Ninety percent of the entire world's ice is found here. This frozen world is largely deserted until the start of spring. Adelie penguins in a hurry. The clock is ticking. Instead of waiting for the summer melt the new arrivals hasten south over the frozen sea. They have come here to breed but polar summers are so short they must be in position before the thaw starts. As the sea ice retreats life can journey
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farther south. Antarctic waters are so rich that visitors come from far and wide to harvest them. Vast numbers of chinstrap penguins come ashore to breed. No bird will lay their eggs directly onto ice so bare rock is a vital commodity. The best patches are worth the climb. The cliff tops are soon stained pink with the droppings of tens of thousands of nesting penguins. Only in a land almost entirely covered in ice could bare rock be reckoned an oasis. Some will travel into the heart of the continent to find it. These are noon attacks the exposed peaks of vast mountain ranges buried in ice over a mile deep. The eerie silence here is only broken in spring. The snow petrels have arrived and are courting. Antarctic petrels now join the most southerly colony on Earth. The birds have flown inland for over three hundred miles to reach this breeding site. Once their eggs have hatched they'll be forced repeatedly to make the 600 mile round trip to gather food in the ocean. First though valuable nesting places must be defended from property thieves. After laying their eggs the petrels take time out to clean their plumage. The south polar skua is a formidable opportunist but the skuas have not chanced upon the petrels they've been waiting for them. These birds do not need to go to the ocean for their food. The skuas can survive further south than any other predator by exploiting the petrels' desperate need for bare rock. Even at the height of summer less than 3% of Antarctica is free of ice and nearly all of that exposed rock is found in one place the Antarctic Peninsula. Its long arm extends further north than the rest of the continent, so spring arrives here first. The thaw unlocks sheltered bays that provide refuge from the relentless battering of the southern ocean. In the depths something stirs... Humpback whales. They have travelled over 5000 miles to reach these waters. The whales are harvesting krill shrimp like creatures that begin to swarm here as soon as the ice retreats. The greatest seasonal change on our planet is underway. The ice grows at an extraordinary rate advancing two and a half miles a day. In a matter of weeks the continent effectively doubles in size. Life flees from Antarctica... but one creature is just arriving. Every winter Emperor penguins leave the comfort of their ocean home and begin a remarkable journey. They head towards their breeding grounds almost a hundred miles inland. Eventually the emperor penguins reach the place where they were hatched an area sheltered by icebergs trapped in the frozen ocean. As winter advances, frequent blizzards drive the temperature down. It's now 60 degrees below zero. The birds at the edge of the huddle bear the brunt of the hundred miles an hour winds and so provide shelter to those taking their turn in the middle. Abandoned by the sun the males are left alone with their eggs to face the coldest darkest winter on Earth. At the northern extreme of our planet the sun rises for the first time in months, illuminating a very different ice world. Unlike Antarctica, the Arctic is a vast frozen sea surrounded by land. Here winter is coming to an end but this bleak wilderness remains locked in ice.
The continent of Antarctica - Ice Worlds online
The continent of Antarctica is as large as the United States of America
  The exposed peaks of vast mountain ranges buried in ice over a mile deep - Planet Earth movie series
The exposed peaks of vast mountain ranges buried in ice over a mile deep
Eider ducks break the silence. They have stayed here braving the northern winter, instead of flying south to warmer climes. Flocks forty thousand strong sweeps across the frozen wastes. They all have the same goal a polinear, a permanent hole in the sea ice kept open throughout the winter by strong ocean currents. This unusual duck pond provides an overnight sanctuary and when day breaks a rare chance to feed. Just ten meters beneath the ice, the sea floor is carpeted with dense mussel beds. These can only be reached during a brief lull in the currents. The ducks must quickly prise the mussels free before the tide starts to turn. The window of opportunity is short. As the current begins to build its up and away. These permanent holes in the ice provide seafood throughout winter. The diners attract others. In the Arctic, any breach in the icy barrier can be a lifeline. Musk oxen create their own. These giants have the strength to smash through the frozen crust to graze on the vegetation below. These icebreakers create an opening for other over winterers. Flocks of ptarmigan make unusual grazing companions for the musk oxen whose entourage grows throughout the day. This odd assembly of vegetarians doesn't go unnoticed. An arctic fox. The musk oxen have recently given birth. For the fox, it's a chance to scavenge but half a ton of mad hairy cow is not to be trifled with. The calves are born well before the spring melts giving them a head start when summer finally arrives. It must get to grips with its new ice world benign one minute life threatening the next. Even in spring winds chill to the bone. The calf must stay close to its mother to avoid getting lost in the sudden blizzard. Arctic wolves. In the whiteout, the threat is almost impossible to detect but the musk oxen instinctively retreat to higher ground. Forming a defensive ring around their calves the adults present a barricade that few hunters could breach but the wolves need not risk injury today. A calf has been left behind in the panic. With each passing day the sun climbs higher in the sky and its rays strike the Arctic more directly. Its spring and new life stirs. The polar bear cubs emerge from the den in which they were born. Their mother stretches her legs after five months under the snow. They're just two months old and instinctively follow her lead. A steep slope makes the best site for a den but it's a tricky place to take your first steps. It may look like fun, but this is serious training for the task ahead. There's no food on the slopes and the family will need to head out across the frozen sea, before the mother's milk runs dry. Two weeks later they're ready. Out on the sea ice the female can hunt for seals but it will take all her mothering skills to keep her cubs safe in this dangerous world of ice. The annual melt has begun. This is a challenging time for the bear family. One out of every two cubs does not survive their first year out on the ice. As the sun's influence increases, the sea ice seems to take on a life of its own. Glacial melt waters pour from the land mingling with the sea and speeding up the thaw. The seascape is in constant flux, as broken ice is moved on by winds and currents. The ice is becoming too weak to support a male polar bear. He attempts to spread his weight but the ice that has supported him all winter is rapidly disintegrating. Each year as the climate warms the Arctic holds less ice. This is a disaster for polar bears. Without its solid platform, they can't hunt the seals they need in order to survive. This may be a glimpse of the unstable future faced by this magnificent creature. As the ice disappears seabirds return to the high Arctic. Little auks arrive in their millions. In some ways these birds are the penguins of the north. The seek bare rock on which to lay their eggs and they look rather like penguins too. Unlike Antarctica, the Arctic can be reached by land based predators which is why little auks have kept the ability to fly. They use screen slopes to protect their eggs, burrowing up to a meter beneath the rocks. At the height of summer the sun never sets but just skims the horizon before rising again. Migrants return to the Arctic from far and wide. They've come to make the most of the brief flush of food and to produce their young. Sand hill cranes have travelled all the way from New Mexico. Their chicks join the growing band of youngsters exploring the tundra. For a few months each year the Arctic becomes the land of the midnight sun and twenty four hours of daylight allow animals to feed around the clock. The arctic fox finally has enough food to raise her large family. If you choose to nest in the open you must be prepared for a fight. Arctic skuas will see off any trespassers even large vegetarians. The male polar bear's ice world has finally vanished beneath him. While the female is still kept on land by her dependent cubs the male can take to the sea in search of food. Ducking and diving, he hopes to ambush seals resting on the remaining fragments of ice. In these new surroundings he is a surprisingly adept swimmer. Once an extremely rare sight polar bears have recently been seen over sixty miles from the shore. There is now no turning back for this bear. He's forced to head out into deeper water. His giant front paws help him to fight the ocean currents. He seems at home in the sea but he cannot swim indefinitely. He will drown if he doesn't find land somewhere in this vast ocean. Walruses are now gathering on low lying islands. They gave birth on sea ice but with this platform now gone, they need a new place to haul out and nurse their young. After several days at sea the male bear finally makes landfall drawn by pungent smells emanating from the island.


The Emperor penguins lock together in tightly packed huddles as they struggle to keep warm
The Emperor penguins lock together in tightly packed huddles as they struggle to keep warm
  The aurora australis, fiery ribbons are illuminating the winter skies
The aurora australis, fiery ribbons are illuminating the winter skies
By the end of summer the bear has lost half his weight. With the ice long gone he is forced onto land in search of food. There will be no easy meals on this island. Walruses are the largest seals in the world. They weight over a ton and are armed with tusks a meter long. Exhausted from his swim the bear must regain his strength. If the global climate continues to warm and the Arctic ice melts sooner each year it's certain that more bears will share this fate. At the southern end of our planet fiery ribbons are illuminating the winter skies. The aurora australis. This light brings no warmth to the male penguins that are still huddling defying the coldest conditions on the planet. Their ordeal is drawing to a close. Thirty days after it last set the sun rises once more on Antarctica. A group of chicks has got lost in the blizzard. Cold and disorientated they search for the colony. It will not be long before the storm claims its first victims. By early summer, the chicks are surprisingly well developed and now look ready to take on the world. Those that survived their first year have the best possible start in life thanks to the extraordinary hardships endured by their parents. Parents who battled with the Antarctic winter, and won. In the Arctic the two polar bear cubs are now independent of their mother and they briefly reunite where their home ranges overlap. Their time together will be fleeting. Most of their lives are now spent alone wandering the vast tracts of frozen ocean. Following their mother, has prepared them for life at the pole an ever changing land ruled by ice. Whether they are ready for the bigger changes that have begun to shape the ice worlds of our planet remains to be seen.
Planet Earth Ice Worlds
Planet Earth Ice Worlds
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