They are protected throughout the archipelago and are considered vulnerable to extinction. They are under constant pressure from non-native predators like rats, feral cats, and dogs, who feed on their eggs and young. And they even have special glands that clean their blood of extra salt, which they ingest while feeding. The terrifying BBC Planet Earth episode that was filmed on Fernandina Island in the Galapagos is. They have dark gray coloring to better absorb sunlight after their forays into the frigid Galápagos waters. They plotting right now, Snoops says of the snakes. Their claws are long and sharp for clinging to rocks on shore or underwater in heavy currents. Their short, blunt snouts and small, razor-sharp teeth help them scrape the algae off rocks, and their laterally flattened tails let them move crocodile-like through the water. this was the scene of the famous Racer Snakes chasing the baby Marine. They look fierce, but are actually gentle herbivores, surviving exclusively on underwater algae and seaweed. The youngest and most volcanically active of the Galapagos Islands, Fernandina is. Each island hosts marine iguanas of unique size, shape and color. Filmed on Fernandina Island in the Galápagos, the Galápagos Racer (Philodryas biserialis) is a slim, fast-moving, mildly venomous snake that reaches lengths of up to 120cm.They were filmed during their best feeding opportunity of the year, as young iguanas are born and make a dash for the safety of the higher rocks above. From that species emerged marine iguanas, which spread to nearly all the islands of the archipelago. Scientists figure that land-dwelling iguanas from South America must have drifted out to sea millions of years ago on logs or other debris, eventually landing on the Galápagos. But what these unusual creatures lack in looks they make up for with their amazing and unique ecological adaptations. It's true, they're not pretty, with their wide-set eyes, smashed-in faces, spiky dorsal scales, and knotty, salt-encrusted heads. The much-maligned marine iguanas of the Galápagos Islands are so famously homely, even Charles Darwin piled on, describing them as "hideous-looking" and "most disgusting, clumsy lizards."
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