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Why is the colour blue so rare in nature?
![Blue Morpho butterfly](/sites/default/files/styles/ua_landscape/public/media/images/2019-08/news-blue-morpho-butterfly.jpg?h=e5aec6c8&itok=hXeTAGp4)
Blue is a very prominent colour on earth. But when it comes to nature, blue is very rare. Less than 1 in 10 plants have blue flowers and far fewer animals are blue.