Deadly 60 - Season 4

Steve Backshall comes face to face with the world's deadliest animals and investigates the deadly threats to their survival.

Steve sets sail to Bali for a diving adventure to find a giant ocean sunfish. He rescues fish trapped in an abandoned net and meets the teenagers fighting to ban plastic bags on the island.

Steve travels to Gabon for the first time. Exploring Loango National Park, Steve goes in search of crocodiles, surprisingly deadly chimpanzees and feisty forest elephants. 

Steve heads to Norway to dive with the planet's ultimate predator - the orca. He also witnesses the northern lights and gets up close to the mighty mouth of a humpback whale.

Steve witnesses a serval hunting in the weird surroundings of a power station at night, puts snakes to the test in a chomp-off and meets a rare spider.

Steve heads to Ecuador to dive with the giant manta ray. He also gets a unique view of the biggest baby on earth and rescues a turtle caught in a fishing line.

Steve gets strangled by a python on a night-time river expedition, climbs a 40-metre tree and finds out why our thirst for palm oil is threatening bears and orangutans. 

Steve dives in the shark capital of the world, meets hammerhead and tiger sharks nose to nose and passionately explains why sharks need friends

Steve heads to the Amazon rainforest in search of some of the deadliest critters on earth. From deadly snakes to freaky spiders, this episode may leave you hiding behind the sofa!

Steve finds out who is boss as he faces a real-life King Kong. He gets up close to Africa's largest snake and stakes out a crocodile nest to try and catch a sneaky thief red-handed.