Sylvia Earle’s a Jersey Girl. Born in Gibbstown in Gloucester County, New Jersey in 1935 she went on to become one of the most acclaimed marine biologists and oceanographers in history. Often referred to by her moniker “Her Deepness,” her career spanned over six decades, during which she set historic deep-sea diving records, advanced the design of submersible vehicles, and became the first female Chief Scientist of the National Oceanic and Atmospheric Administration (NOAA).
Long before she earned the nicknames “Her Deepness” and “The Sturgeon General,” Earle’s first encounter with the sea came during a family trip to the Jersey Shore when a wave knocked her down. As she later recalled, “That’s when the ocean first got my attention.”
When she was 13, the family moved from their small Gloucester County farm to Dunedin, Florida, near the Gulf of Mexico. Her parents encouraged her curiosity about the natural world, so Earle spent countless hours exploring ponds, collecting fish and tadpoles in glass jars, and recording her observations in notebooks — early habits that helped shape her remarkable scientific career.
Always an excellent student, in 1952 she graduated high school with a scholarship at 16 and went to Florida State University, earning a Bachelor of Science degree in the field of botany. Her passion led her to Duke University, where she conducted doctoral work on phycology, or algae — tiny organisms that produce most of the Earth’s atmospheric oxygen through the process of photosynthesis
Only Woman on a Research Ship
It was while completing her coursework and writing her dissertation, that she was invited on a 6-week voyage to the Indian Ocean on a National Science Foundation research ship — a demanding job rarely offered to women. But Earle, by now often the only woman in a scientific setting, took full advantage of the opportunity. For two years, she traveled to the Galapagos Islands, the Chilean coast and the Panama Canal Zone. During this time she also became a certified SCUBA diver so she could get up close and personal with the ocean life she had been studying.
Earle earned her both her Master’s and a Doctorate in Phycology from Duke. As part of her dissertation, she had collected over 20,000 samples of algae and cataloged the aquatic plants in the Gulf of Mexico, making her one of the first scientists to use SCUBA to document marine life firsthand. It remained a landmark study for decades. Harvard University took notice and appointed her a research scholar.
She joined a group of scientists in the Bahamas in 1968 as part of the Smithsonian’s Man-in-Sea project — an experimental underwater habitat. Descending 100 feet below the surface in a submersible vehicle, she entered the habitat, making her the first woman to do so. Did I mention she was four months pregnant at the time?
The following year, Sylvia Earle applied to the Tektite II Project, an initiative sponsored by the U.S. Navy, Dept. of the Interior, and NASA near the Virgin Islands. Much like the Man-in-Sea project, it allowed scientists to live and work in a habitat 50 feet underwater. But the government rejected her — they didn’t want men and women living together in the deep. But don’t think for a minute that stopped Sylvia Earle.
Her Own Team of Female Scientists
In 1970 she led her own all-female team of scientists and technicians to the habitat where, for two weeks, they observed and photographed marine life. It was one of those “never- been-done” events. And when she and her team surfaced, they became instant celebrities. Sure, they garnered headlines. But respect? At a time when the realms of science still belonged to men, male divers were known as Aquanauts. Earle and her research team were dubbed “Aquababes, Aquachicks, Aquanettes, and even Aquanaughties.”
The Philadelphia Daily News reported “Five Aquanettes End Sea Test,” noting how the “first women to participate in the world’s most ambitious underwater research project emerged yesterday backsides first.” Rockford, Illinois’ The Morning Star’s headline read “Mermaids May One Day Swim in Space.” Lancaster, PA’s Daily Intelligencer Journal reported how “Scientific Mermaids Begin Life on Ocean Floor.” But Florida Today ‘s headline beat them all, noting how “five shapely women wearing red skindiving suits splashed into water clear as glass to begin two weeks of living and working beneath the sea.” And just about every news report described Sylvia Earle as “fragile in appearance, 5 feet 3 inches, 110 pounds and pretty.”
But with the spotlight now trained on her, Sylvia Earle made a decision. She would share her passion for marine life and its protection with broader audiences, with the goal of helping the public understand and appreciate the beauty and value of our oceans.
Move to International Projects
By now, she was married and divorced, with three children. Moving her family to Los Angeles, she taught at UCLA, gave talks across America describing her underwater explorations, and wrote for National Geographic magazine. She collaborated with an undersea photographer, resulting in the documentary Gentle Giants of the Pacific and her 1980 book Exploring the Deep Frontier, while continuing to lead international marine expeditions, often as chief scientist.
She then teamed up with noted engineer (and soon to become third ex-husband) Graham Hawkes. Together they started Deep Ocean Engineering, unveiling their Deep Rover research submarine in 1985. A state-of-the-art vessel, it reached depths of 3,300 feet, allowing scientists to unlock secrets hidden deep within what is known as the “midnight zone” — a realm of absolute darkness, near-freezing temperatures and immense pressure that’s home to bizarre, bioluminescent creatures, underwater volcanoes and unique, self-sustaining ecosystems never touched by sunlight.
Chief Scientist, NOAA
In 1990, Sylvia Earle was appointed Chief Scientist by the National Oceanic and Atmospheric Administration (NOAA), making her the first woman to hold that position and, as head scientist, responsible for safeguarding the health of America’s oceans. She even led several critical research expeditions during the 1991 Persian Gulf War to evaluate the devastating effects of the destruction of Kuwaiti oil wells.
On her return, she refocused her attention on her work in deep sea engineering, exploration and education, publishing Sea Change: A Message of the Oceans — a call to action to preserve Earth’s seas. Three years later, she led the Sustainable Seas Expeditions, a five-year program sponsored by the National Geographic Society, earning her the nicknames “Her Deepness” and “The Sturgeon General.”
Finally, Earle founded Mission Blue, a global alliance dedicated to establishing marine protected areas known as “Hope Spots” that harbor abundant species in unique habitats critical to the health of oceanic ecosystems. As of 2026, Mission Blue had established over 169 Hope Spots spanning 15 countries and more than 57 million square kilometers of the ocean. Explore this network of Hope Spots.
Record Untethered Deep Dive
Sylvia Earle has written over 200 publications; lectured in more than 80 countries and led more than 100 marine expeditions totaling over 7,000 hours. She holds the unbroken record for the deepest untethered solo dive by a woman, descending 1,250 feet below the surface off Oahu, Hawaii in a JIM suit. For us landlubbers, a JIM suit is basically a wearable submarine that lets divers descend to extreme depths while staying completely dry and breathing air at normal pressure, eliminating the need for decompression.
She has received 27 honorary degrees and more than 100 international honors, including Time Magazine’s first Hero for the Planet in 1998; the United Nations Champion of the Earth in 2014; and the 2009 TED Prize — an annual $1 million award given to an exceptional individual to help make a massive “wish to change the world” come true. She also serves on the Advisory Circle of Daughters for Earth, a campaign sponsored by One Earth to mobilize women-led climate action around the world. And, as if that weren’t enough, LEGO even created a deep-sea diver to honor Dr. Sylvia Earle in 2015, releasing a female scientist minifigure modeled after “Her Deepness”, featuring little yellow flippers as a nod to her extensive underwater expeditions.
Sylvia Earle’s lifelong passion and pioneering research has revolutionized, and continues to expand, our understanding of marine ecosystems — their importance, their fragility and their vulnerability to the activities of man, while inspiring countless individuals to join the fight for a more sustainable future.