BBC viewers were scared stiff last night by dramatic footage in the long-awaited series Planet Earth 2 that showed dozens of snakes chasing baby iguanas.

Axar.az reports referring to BBC.

The astonishing television which showed marine iguanas attempting to outrun a knot of racer snakes on Fernandina Island was labelled ‘the stuff of nightmares’.

Hatchlings could be seen emerging from the sand of the Galápagos island in the Pacific Ocean in June for what is the snakes’ best feeding opportunity of the year.

The footage on BBC1 showed some iguanas outrun the snakes to safety by the sea while others were caught before the snakes wrapped themselves around them.

When the crew saw the snakes for the first time, they were too shocked to film - and host Sir David Attenborough had never seen anything like it either, it was claimed.

Among the millions of viewers captivated by the footage shown at 8pm last night was Olympic rower Will Satch, who described it as a ‘real life horror film’.