Footage filmed in the United States, Canada and South America reveals that fearsome killer whales can also be loving parents, social animals and entertainers.
Hong Kong, which includes 243 islands and a wild mountainous area on mainland China, is one of the most crowded places on Earth with 6 million people jostling for space in just 20 square miles, and it is teeming with wildlife.
Observing a rare group of spider monkeys interacting with their Amazon environment.
Studying the family life of mountain gorillas and the impact of man's turbulent politics on their peaceful world.
Examining whether great white sharks and tiger sharks attack humans because they have a taste for people or it's due to a case of mistaken identity.
The history of sharks is an epic tale of battle, extinction, adaptation and survival for the most successful predator of all time.
Venturing into the crystal clear waters of African springs to explore the often violent underwater lives of hippos, crocodiles and giant pythons battling for supremacy.
The whales of Chukotka, a frozen peninsula on Russia's Far Eastern frontier.