The Strange Beauty of the Sea’s Microscopic Plants [Slide Show]

Some of the most fantastical denizens of the ocean realm are invisible to the naked eye

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In the June issue of Scientific American, Ronald Martin of the University of Delaware and Antonietta Quigg of Texas A&M University at Galveston explain how increases in the quantity and nutrient content of tiny plants called phytoplankton probably helped power the rise of the modern marine mammals. As so-called green phytoplankton gave way to red phytoplankton, so named for the type of chlorophyll they use during photosynthesis, a host of new sea creatures emerged, starting around 250 million years ago. The slide show below showcases some of the myriad intricate forms of red phytoplankton—a group that includes coccolithophores, dinoflagellates and diatoms—that populate the world’s oceans today.

» View the Slide Show

Kate Wong is an award-winning science writer and senior editor for features at Scientific American, where she has focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for nearly 30 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home to the shores of Kenya’s Lake Turkana in search of the oldest stone tools in the world, as well as to Madagascar on an expedition to unearth ancient mammals and dinosaurs, the icy waters of Antarctica, where humpback whales feast on krill, and a “Big Day” race around the state of Connecticut to find as many bird species as possible in 24 hours. Wong is co-author, with Donald Johanson, of Lucy’s Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow her on Bluesky @katewong.bsky.social

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Scientific American Magazine Vol 308 Issue 6This article was published with the title “The Strange Beauty of the Sea’s Microscopic Plants [Slide Show]” in Scientific American Magazine Vol. 308 No. 6 ()
doi:10.1038/scientificamerican062013-2IWFL2y2W8ItGLvFWXA6G7

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