Sylvia Alice Earle (born August 30, 1935) is an American marine biologist, oceanographer, explorer, author, and lecturer. She has been a National Geographic Explorer at Large (formerly Explorer in Residence) since 1998. Earle was the first female chief scientist of the U.S. National Oceanic and Atmospheric Administration, and was named by Time Magazine as its first Hero for the Planet in 1998. Wikipedia
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