In June, the birth of small marine iguanas is a real boon for snakes (pseudalsophis biserialis) of Fernandina Island, an uninhabited island located in Ecuador in the Galapagos archipelago. From their first steps, young iguanas must escape attacks from dozens of hungry snakes in a terrifying chase worthy of a horror movie. If some manage to take shelter on the rocks, not everyone has that chance. A nightmarish video extracted from the animal series "Planet Earth II" aired on BBC television.