The Mystery of the Baby Sea Turtles “Lost Years”  – Where Do They Go After the Hatching in Koh Tao?

Have you ever watched a baby sea turtle take its very first steps into the ocean? It’s one of the most magical moments in nature,  a tiny creature, full of determination, paddling into the waves, beginning its incredible adventure. But have you ever wondered where they go after that?

Once hatchlings leave the beach, they vanish into what scientists call “the lost years”. During this mysterious phase, young turtles disappear into the open ocean, where they spend 2 to 10 years exploring, feeding, and simply surviving. These early years are crucial for their growth, as they learn to navigate the vast blue world.

Researchers believe that baby turtles spend this time drifting along warm ocean currents, finding shelter wherever they can, sometimes among floating debris, patches of seaweed, or even drifting seagrass. These small havens offer protection and a steady supply of food, such as tiny crustaceans, jellyfish, and plankton. As they feed and explore, they slowly grow stronger and learn to navigate the vast open sea before eventually returning closer to the shore.

For the turtles that hatch in Koh Tao, this could mean they will be traveling far beyond Koh Tao’s reefs before finding their way back to familiar waters. When they’ve grown big enough, the turtles begin to make their way back to shallow coastal waters such as those surrounding Koh Tao (Shark Bay, Aowleuk, Tanote, etc), a small island in the Gulf of Thailand known for its stunning coral reefs and rich marine ecology. Here, scuba divers, freedivers, and snorkelers occasionally get lucky enough to meet them face-to-face. Whether you’re diving or just swimming, encountering a turtle gliding gracefully over the coral reef is always a heartwarming experience. Just like a reminder of how much life thrives beneath the surface.