Did you know... that there is roughly 30% more UV radiation at the summit of Haleakalā compared to sea level? and that plants have adapted to it? The silvery hairs of the ʻĀhinahina (Argyroxiphium sandwicense, Haleakalā silversword) help the plant protect itself by reflecting sunlight--kind of like its own personal sunscreen! The silvery glow of the ʻāhinahina in direct sunlight is difficult to capture on film, but it is a great reminder that if you see it in person, you should lather up on the sunscreen! #NPS #SafetyFirst #silversword #Haleakalā NPS Photo