Humpback whale breaching the water
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Kayaker's close call with a 20-tonne whale

15 January 2014 Last updated at 09:13 GMT

If you're out kayaking in the sea, then the last thing you'd want to meet would be a 20-tonne whale...

But take a look at what happened to a kayaker in Norway last week - a humpback whale came up for air right next to his kayak!

He said he didn't realise he was sitting on the whale's back, and didn't have time to be afraid. Luckily, the big mammal happily swam off after the close encounter.