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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 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 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.