The Grand Cayman Blue Iguana, also known as the Cayman Island rock iguana, is a critically endangered lizard species endemic to the island of Grand Cayman in the Caribbean. This reptile can reach lengths of up to 5 feet and has striking blue skin. Due to habitat destruction, predation from feral animals, and illegal capture for the pet trade, the population of this iguana species dwindled to less than 30 individuals in the 2000s. Conservation efforts, including captive breeding and habitat restoration, have helped increase the population to over 1,000 individuals, but the species remains at risk of extinction.