Disneynature earth is coming to theaters April 22 (Earth Day) and I think I'm more excited than my kid's.  Here are a bunch of fun facts to know before you go.

Disneynature earth Fun Facts

The humpback whales in the film migrate 4,000 miles from the warm waters of the tropics to the waters off Antarctica where they feed on krill and small fish.

• To avoid getting separated and losing track of each other, mother grey whale and calf keep in contact by slapping their fins on the surface of the water.
• Humpbacks sometimes feed on krill cooperatively using a method call “bubble netting.” A group of whales emit bubbles in a circle, which herds the krill together and forces them towards the surface at the center of the circle, making it easy for the whales to feed.
• Humpback whales' very small eyes help them withstand the pressure of a deep sea dive.
• Instead of teeth, a humpback whale has approximately 330 pairs of baleen plates, or fine brush-like structures, which strain krill from the water.
• Humpback whale calves are able to swim within 30 minutes of being born. Calves drink about 160 gallons of milk a day.
• Humpback whales are singers: their songs can last up to 10 minutes. Why or how humpback's sing is unknown, though it is possible it is related to communication and, in breeding season, to mating.

Polar Bears

• The polar bear gets all the liquid it needs from its food -– its main source being the ringed seal — so it has no need to drink water.
• Polar bears will travel hundreds of miles in search of food and can swim 12 miles a day.
• The polar bear is so well adapted to retaining heat that it can't run long distances because it would be in danger of overheating.
• Polar bears are the largest land predator in the world. Males can grow up to about 8 feet and weigh up to 1,800 pounds.
• Even with their mother's care, only 50% of the polar bear cubs survive their first year, and more are lost when they first leave their mother to make their way alone.
• While waiting to catch seals, a polar bear will cover its black nose with its paw to make its white camouflage perfect.
• The polar bears were filmed on Kong Karls Land, a group of islands between the Barents Sea and the Artic Ocean. Part of Norway, it is a land where the midnight sun lasts from April 20 to August 23, and the polar night lasts from October 26 to February 15.

Elephants

• An adult elephant can eat over 300 pounds of food and drink 50 gallons of water a day.
• Elephants' ears act as a cooling system. By holding them out in the wind or flapping them, the elephant can increase the movement of air over its ears and cool the blood running through them, thereby regulating its body heat.
• It can take up to six months for an elephant calf to learn how to use its trunk to bring water up to its mouth.
• In times of danger the adult elephants in a herd will form a ring around the young, facing out to protect them.
• In the film the elephants spend weeks traveling across the Kalahari Desert to reach the abundant waters of the Okavango Delta, the world's largest inland delta, where the Okavango River empties into the desert.

Other Cast Members

 - Millions of caribou undertake the world's longest land migration: some 2,000 miles.

 - Grey wolves travel greater distances than any other land mammal except the caribou.

 - Thousands of demoiselle cranes migrate from Mongolia to the warmer climates of India, over the highest mountain range on earth: the Himalayas. They can fly at altitudes up to 25,000 feet.

 - Lions are the only cats to live socially in prides, and it is the lionesses in a pride that do most of the hunting.

 - The cheetah is the world's fastest land animal. It can accelerate from zero to 40 miles per hour in three strides and to its full speed of 70 miles per hour in seconds.

 - A Great White shark is the world's largest predatory fish. It can have around 3,000 teeth in its mouth at any one time. It is one of the few sharks that can jump fully out of the water.

 - In the film, a troop of Chacma baboons can be seen delicately wading through the flooded Okavango Delta, where the Okavango River empties into the Kalahari Desert, as though they can't stand getting wet. They do, however, enjoy eating the tubors of aquatic plants. An average troop of baboons can consist of 20 to 80 individuals.

 - Mandarin ducks build their nests in a hole in a tree up to 30 feet from the ground. When the eggs hatch, the mother calls the chicks from the ground. Each chick crawls out of the hole and launches itself into a free fall. Astonishingly all the chicks land – and sometimes bounce – unhurt and head for the nearest feeding ground.

 - There are approximately 40 different Bird of Paradise species in Papua New Guinea, each with a different mating display. For his mating display, the male Six Plumed Bird of Paradise builds his dance floor, clearing a small patch of forest floor of leaves and twigs and pruning the surrounding branches of leaves. He wants all the visiting females to get a good look at his performance.

 - During the approximately five years of filming the “earth,” the production captured 42 animal species on film.

 - The earth is tilted at an angle of exactly 23.5 degrees to the sun. Without this tilt, the earth would be a very different planet. While there would still be climatic variations north to south caused by the varying concentration of solar energy reaching the planet's surface, there would be no seasons and no variation in the hours of daylight and darkness during the year.

 - Tropical rainforests cover less than 3% of the planet's surface but are home to more than 50% of the world's species.


Here is a great educational packet to download:
http://disney.go.com/disneynature/medias/downloads/Earth_Activity_Guide-Web.pdf

Check out more at: http://disney.go.com/disneynature/