My Life with Sea Turtles

The video is only eight minutes long, but it’s hard to watch. It starts with a shaky camera, the sound of waves, and the voices of scientists on a boat. They’ve pulled a large olive ridley sea turtle from the water, a magnificent, ancient-looking creature. But something is wrong. There’s a blockage in its nostril. At first, they think it’s a parasitic worm. They grab a pair of pliers from their toolkit and try to pull it out. The turtle flinches, blood begins to stream from its nose, and the object won’t budge. It’s lodged deep. For several excruciating minutes, they work on it, the turtle writhing in what is clearly agony. Finally, with a sickening tug, a four-inch plastic straw comes free. The turtle immediately takes a deep, shuddering breath. In that moment, a global problem was a visceral, painful, and undeniable reality condensed into a single, suffering animal.

The person holding that camera, whose voice you can hear trembling with a mix of frustration and determination, was marine biologist Christine Figgener. She never intended to become a viral filmmaker or an activist. Her goal that day in 2015 off the coast of Costa Rica was simple: collect data for her PhD research on sea turtle mating behavior. But uploading that video out of a sense of scientific duty and outrage changed everything. It was viewed hundreds of millions of times, sparking worldwide conversations and leading to corporate and legislative bans on plastic straws. Yet for Figgener, that viral moment was just one frame in a much larger, more personal story of a life spent in and for the ocean. Her book, My Life with Sea Turtles, is about the thousands of unfilmed hours—the patient observations, the research setbacks, and the deep, abiding connection that made that eight-minute encounter not just possible, but necessary.

Module 1: The Secret Life of an Ancient Mariner

To understand the fight to save sea turtles, we first have to understand the turtles themselves. They are ancient, complex creatures with remarkable adaptations. The author reveals a world driven by instinct, biology, and a deep connection to the planet's rhythms.

The first thing to grasp is that sea turtle survival hinges on a delicate balance of environmental cues. They are incredibly sensitive. For nesting, females rely on the natural contrast between a dark, vegetated shoreline and the brighter horizon over the water. This is their guide. Artificial light from a single house or even a white flashlight can disorient them. It can scare them back into the ocean before they even begin to lay their eggs. Figgener describes patrols conducted in near-total darkness, using only red lights, which are less disruptive to the turtles. It’s a powerful reminder that our modern world constantly intrudes on ancient biological processes.

Building on that idea, the nesting process itself is a marvel of instinctual engineering. The author details how a female leatherback uses her hind flippers with the precision of hands. She carefully sculpts an egg chamber deep in the sand. This process is so hypnotic that once a turtle enters her "nesting trance" while laying eggs, she becomes almost oblivious to her surroundings. This allows researchers to work. But what's happening inside the nest is just as fascinating. A turtle's nest is a self-regulating incubator designed for collective survival. A female lays not just viable eggs but also smaller, yolkless "false eggs." These placeholders, called shelled albumen globes, create space within the nest. As they deflate over time, they allow the hatchlings to move and coordinate their escape. This group effort is a form of proto-cooperation, where synchronized movement helps the entire clutch emerge together, overwhelming predators through sheer numbers.

But here’s the thing: the sand itself dictates their fate. Incubation temperature determines a hatchling's sex and its chance of survival. This is known as Temperature-dependent Sex Determination. There are no sex chromosomes here. For most species, a pivotal temperature of around 29°C, or 84°F, produces a balanced mix of males and females. Just a couple of degrees warmer, and you get a nest of almost all females. A couple of degrees cooler, and it’s all males. With climate change warming our planet, beaches are producing drastically skewed sex ratios, sometimes nine females for every one male. This is a ticking time bomb for future genetic diversity and population viability.

Finally, the journey doesn't end at hatching. After their "lost years" spent in the open ocean, often hiding in floating mats of sargassum seaweed, juvenile turtles return to coastal areas. These "kindergartens" are rich feeding grounds where they grow rapidly. Rapid growth is a young turtle's primary defense mechanism. By quickly reaching a certain size, like a dinner plate, they achieve a "size refuge." They become too big for most predators' jaws. This strategy, combined with specialized diets—like hawksbills eating sponges on coral reefs or leatherbacks consuming jellyfish in the open ocean—is what has allowed these seven remaining species to survive for over 120 million years. Their biology is a masterclass in adaptation.