These algae produce proteins that absorb harmful UV light and glow in vibrant colors, only visible under special blue light. Check out the stunning spectacle that helps protect our reefs. #AmericasNationalParks is now streaming on @disneyplus and @hulu. Explore the World with National Geographic subscriptions: http://natgeo.com/ytngmagazine ➡ Subscribe: http://bit.ly/NatGeoWILDSubscribe And check out more National Geographic series and specials here: ➡ Disney Plus: https://on.natgeo.com/3q6on5p ➡ Hulu: https://on.natgeo.com/3Qor0Ko ➡ NGTV app: https://www.nationalgeographic.com/tv/ ➡ ABC app: https://abc.com/ #NatGeoAnimals #Shorts The National Geographic Society uses the power of science, exploration, education, and storytelling to illuminate and protect the wonder of our world. Learn more at www.natgeo.org About Nat Geo Wild: National Geographic Wild is a place for all things animals and for animal-lovers alike. Take a journey through the animal kingdom with us and discover things you never knew before, or rediscover your favorite animals! Get More Nat Geo Wild: Official Site: http://bit.ly/NatGeoWILD Facebook: http://bit.ly/NGWFacebook Twitter: http://bit.ly/NGWTwitter Instagram: http://bit.ly/NGWInstagram Check out the underwater spectacle protecting our reefs ✨ #AmericasNationalParks https://youtube.com/shorts/9sA_LrIKChE Nat Geo Wild https://www.youtube.com/user/NatGeoWild