Into the Planet: my life as a cave diver by Jill Heinerth

 288 pages

"More people have died exploring underwater caves than climbing Mount Everest, and we know more about deep space than we do about the depths of our oceans...

"Jill Heinerth—the first person in history to dive deep into an Antarctic iceberg and leader of a team that discovered the ancient watery remains of Mayan civilizations—has descended farther into the inner depths of our planet than any other woman. She takes us into the harrowing split-second decisions that determine whether a diver makes it back to safety, the prejudices that prevent women from pursuing careers underwater, and her endeavor to recover a fallen friend’s body from the confines of a cave. But there’s beauty beyond the danger of diving, and while Heinerth swims beneath our feet in the lifeblood of our planet, she works with biologists discovering new species, physicists tracking climate change, and hydrogeologists examining our finite freshwater reserves."  --from the publisher

Cave diving is a terrifying concept to me, and I was fascinated by the stories of their exploration. The photos are amazing, too! If you decide to read it, you might want to be aware that the book includes quite a bit about the author's personal life as well as cave diving. I give it 3.5 stars out of 5.