Sylvia Earle has spent decades studying the vast life in our planet's oceans and advocating for its protection.
She is Chair of the Deep Search Foundation and is an Explorer-In-Residence at the National Geographic Society, has set a record for solo diving, and has even blogged for HuffPost.
In this video from CNN, Earle recounts highlights from her history in oceanography.
She talks about the 1969 program that was simultaneously working to put women under the sea while also putting men on the moon.
In 1979, she worked on a book for National Geographic, using a new diving suit that she likens to a "walking refrigerator," letting her individually explore the ocean floor.
She tells CNN, "It was just an extravaganza of life, and I had a chance to just walk among these creatures for the first time, and bring back the news of what was there."
Earle stresses the importance of protecting our oceans, saying that we need to "try to inspire an awareness of what the problems are, and to inspire those who have the capacity to solve problems to do just that."
She tells CNN that these next ten years may be the most important out of the next 10,000 "to secure for us an enduring future on this little blue planet that is already in serious trouble."