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  5. Marine iguanas, Galápagos Islands, Ecuador
arrow_back_ios arrow_forward_ios Marine iguanas, Galápagos Islands, Ecuador

February 12, 2025

Marine iguanas, Galápagos Islands, Ecuador

© helovi/Getty Image

Darwin's blueprint. Celebrating Charles Darwin

Today, we celebrate Darwin Day—a shout-out to Charles Darwin and his game-changing ideas about life on Earth. As an English naturalist, geologist and biologist, his theory of natural selection revolutionised our understanding of species, evolution and our role in the natural world. His work, 'On the Origin of Species,' published in 1859, laid the foundation for modern evolutionary biology. This day marks the birthday of Darwin and honours his genius while promoting curiosity, science and critical thinking. From thought-provoking talks to engaging exhibits, this day motivates us to keep exploring.

Speaking of cool science, marine iguanas, found only on the Galápagos Islands, serve as an example of Darwin's evolutionary principles. These reptiles, seen in today's image, are the only lizards in the world that forage in the sea, diving to graze on algae growing on submerged rocks. They've adapted in remarkable ways, from flattened tails for swimming to salt glands that allow them to expel seawater by sneezing. During his visit to the islands in 1835, Darwin noted their appearance as being like 'imps of darkness' but also recognised how perfectly they were adapted to their harsh environment.

sky outdoor lizard reptile animal rock crocodile rocky turtle dinosaur crocodilia iguania marine iguana tortoise iguanidae

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