This horn shark has a secret weapon to avoid being eaten alive, Planet Earth III BBC

Off the west coast of California, deep in the kelp forest, an angel shark lies hidden in the sand waiting to ambush its prey. This predator can strike in a tenth of a second, but it can t always keep its dinner Sir David Attenborough presents Planet Earth III. Journeying to the far reaches of our planet, this eightpart series follows some of the worlds most amazing species, telling extraordinary stories that are dramatic, thrilling, funny and sometimes heartbreaking, but always full of hope. , PlanetEarth3, iPlayer Subscribe and to the BBC Watch the BBC first on iPlayer All our TV channels and S4C are available to watch live through BBC iPlayer, although some programmes may not be available to stream online due to rights. If you would like to read more on what types of programmes are available to watch live, check the Are all programmes that are broadcast available on BBC iPlayer FAQ