Few sounds are more beautiful or moving than the underwater songs of the humpback whale. Male whales compete with their songs, which often last for 10 minutes at a time, and can be repeated for hours on end. Whales separated by thousands of miles of sea will sing almost identical songs. Researchers have found that the songs change throughout the breeding months, following a mysterious pattern repeated across the waves. Whales also use sound to hunt. To catch herring, humpback whales release a stream of bubbles to form a shimmering, circular fishing net. Emitting a repetitive loud scream, they scare the fish into a tight ball, then lunge out of the water to swallow the shoal whole. Now it seems that the long-held image of the gentle giant must change to one of a ferocious and opportunistic hunter.

Every summer in the seas off Alaska humpback whales, sea lions and killer whales depend on an explosion of plant life, the plankton bloom. It transforms these seas into the richest on Earth. But will these animals survive to enjoy the great feast? The summer sun sparks the growth of phytoplankton, microscopic floating plants which can bloom in such vast numbers that they eclipse even the Amazon rainforest in sheer abundance of plant life. Remarkably, it is these minute plants that are the basis of all life here. But both whales and sea lions have obstacles to overcome before they can enjoy the feast. Humpback whales migrate 3,000 miles from Hawaii, and during their 3 month voyage lose a third of their body weight. In a heart-rending scene a mother sea lion loses her pup in a violent summer storm, while another dramatic sequence shows a group of killer whales working together to kill a huge male sea lion.
In late summer the plankton bloom is at its height. Vast shoals of herring gather to feed on it, diving birds round the fish up into a bait ball and then a humpback whale roars in to scoop up the entire ball of herring in one huge mouthful. When a dozen whales work together they employ the ultimate method of co-operative fishing - bubble net feeding. One whale blows a ring of bubbles to engulf the fish and then they charge in as one. Filmed from the surface, underwater and, for the first time, from the air, we reveal how these giant hunters can catch a tonne of fish every day.

When animals can tap into remarkable senses and supernatural skills, crossing the globe, even moving between worlds to find a mate, safety and food, they become truly unstoppable.

Millions of years ago incredible forces ripped apart the Earth's crust creating our seven continents - each with its own distinct climate, its own distinct terrain and its own unique animal life. From the colourful paradise of South America to the scorching heat of Africa, ‘Seven Worlds, One Planet’ showcases the true character of each continent in turn and reveals just how it has shaped all life there. Be surprised by unexpected stories. Marvel at iconic landscapes. And be awestruck by spectacular wildlife. This series is an eye-opening journey around a world you thought you knew.
The snowy shores and icy waters of Antarctica are home to some of the most amazing and unusual wildlife in the world. However, even here, many species face extinction due to rapid climate change and overhunting.

This featured episode of the documentary series takes viewers on a captivating journey around the world, showcasing the astonishing ways in which animals adapt to living alongside humans. In Sauraha, Nepal, a rhino navigates through human-inhabited areas in search of food. In Bali, long-tailed macaques have learned to trade stolen items for food, demonstrating their intelligence and adaptability. The bustling streets of New York City are home to pavement ants that thrive on human leftovers, while in India, revered cobras coexist with humans in a unique cultural relationship.
Melbourne, Australia, features nocturnal frogmouths benefiting from urban lighting for hunting, and Lake Tahoe in North America sees black bears adapting to easy food sources in human settlements. The documentary also delves into the challenges faced by wildlife due to human expansion and climate change. It highlights the plight of African elephants in Kenya conflicting with farmers, the impact of overfishing on humpback whales in Vancouver Island, and the dramatic increase of desert locusts in northeastern Africa due to climate-induced conditions.
The episode concludes by emphasizing the importance of reimagining our relationship with nature. It suggests a shift towards plant-based diets to reduce agricultural land use and the potential of vertical farming technologies, offering hope and solutions for a sustainable coexistence with wildlife.