The Messenger • 2015

53:45

The next programme explores the various sea-living invertebrates. In Morocco, the limestones are 600 million years old, and contain many invertebrate fossils. They fall broadly into three categories: shells, crinoids and segmented shells. The evolution of shelled creatures is demonstrated with the flatworm, which eventually changed its body shape when burrowing became a necessity for either food or safety. It then evolved shielded tentacles and the casings eventually enveloped the entire body: these creatures are the brachiopods. The most successful shelled animals are the molluscs, of which there are some 80,000 different species.

2/13 • Life on Earth • 1979 • Nature

53:40

Follow the adventures of the filmmakers behind "Big Pacific". This "Making Of" special explores the highlights and challenges of wildlife filmmaking.

S1E5 • Big Pacific • 2017 • Nature

47:02

He reaches the final stage of his epic 650-mile journey, following the annual migration of Botswana's 130,000 elephants. Together with his guide Kane, Lev follows the elephants deep into the heart of the Okavango Delta, a vast wetland teeming with wildlife where every year more than 40,000 elephants gather to feed. Lev and Kane narrowly avoid a pride of lions who have brought down a male buffalo and watch as they move in for the kill, but are forced to wade through wide channels where crocodiles, hippos and snakes lurk.

S1E3 • Walking with Elephants with Levison Wood • 2020 • Nature

20:55

Who's a good dog? They all are. From puppy-dog eyes to feats of heroism, see how canines evolved into humankind's best friends and sources of pure love.

S3E4 • Explained • 2021 • Nature

58:47

Off the coast of Micronesia, Kate Humble and her scuba team continue to discover spectacular examples of underwater life. Meanwhile, the deep-sea divers search for previously unseen fish in depths that test the limits of human endurance, but their explorations are hindered by an unexpected equipment failure.

S1E2 • Pacific Abyss • 2008 • Nature

59:09

On 12th September 2015, a 30-ton humpback whale breached and landed on Tom Mustill and his friend Charlotte Kinloch as they paddled a sea kayak in Monterey Bay, California. Incredibly, both survived the incident, but the near-death experience haunted documentary maker Tom and left him wondering if the whale was deliberately trying to hurt them. To find the answer, Tom returned to California in 2018 to investigate. Tom meets those who have survived similar hair-raising encounters and the experts who know the whales best. What he discovers raises far bigger questions, not just about what happened that day but also about our relationship with whales and their future alongside us.

Natural World • 2019 • Nature