Echo is a youngster who can't quite decide if it's time to grow up and take on new responsibilities-or give in to her silly side and just have fun. Dolphin society is tricky, and the coral reef that Echo and his family call home depends on all of its inhabitants to keep it healthy. But Echo has a tough time resisting the many adventures the ocean has to offer.

Filmmakers Alastair Fothergill and Keith Scholey chronicle a year in the lives of an Alaskan brown bear named Sky and her cubs, Scout and Amber. Their saga begins as the bears emerge from hibernation at the end of winter. As time passes, the bear family must work together to find food and stay safe from other predators, especially other bears. Although their world is exciting, it is also risky, and the cubs' survival hinges on family togetherness.

Years spent recording footage of creatures from every corner of the globe is bound to produce a bit of drama. Here's a behind-the-scenes look.

African Cats captures the real-life love, humor and determination of the majestic kings of the savanna. The story features Mara, an endearing lion cub who strives to grow up with her mother’s strength, spirit and wisdom; Sita, a fearless cheetah and single mother of five mischievous newborns; and Fang, a proud leader of the pride who must defend his family from a once banished lion.