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Fauna · Tortuguero National Park Beach, Limón Province, Costa Rica

Green Turtle Nesting Night — Tortuguero Costa Rica

Tortuguero National Park on Costa Rica's Caribbean coast hosts the world's largest Atlantic green turtle (Chelonia mydas) nesting population — over 100,000 females nesting annually on the 35-kilometre beach from July through October. Night turtle tours (strictly regulated, with guides using red torchlight only) witness females emerging from the sea under cover of darkness, excavating a body pit in the sand with their flippers, depositing 80–120 eggs in the egg chamber, covering and disguising the nest, and returning to the sea — a 2-hour sequence of ancient biological repetition that has occurred unchanged on this coast for 100 million years. Hatchlings emerging at the same beach in August and September fill the sand around the tour group as they orientate to the ocean's light reflection — the most emotionally charged moment in the turtle-watching world.

When
Jul — Oct
Best viewing
A strictly guided night walk along a dark beach to observe green turtles nesting — eggs depositing, nest covering, and in peak months, hatchlings emerging and racing toward the sea. An intimate, tightly regulated, emotionally overwhelming wildlife encounter.
Category
Fauna
Status
Returns Jul 2026

About this spectacle

On Tortuguero's dark Caribbean beach, the sea heaves and a massive Atlantic green turtle hauls herself ashore — 150 kilograms of prehistoric determination moving in slow, deliberate lunges toward the treeline. Guided groups, no more than eight people, follow in near-silence behind a ranger carrying only a dim red torch. You watch her dig a body pit, then a precision egg chamber, her rear flippers working with surprising delicacy. For thirty minutes the beach is utterly still except for the rhythmic thud of eggs falling into sand and the turtle's labored breathing. After covering the nest with sweeping flipper strokes, she pivots and pulls herself back to the waterline, disappearing into black surf. In August and September, hatchlings erupt around your feet — dozens of golf-ball-sized turtles scrambling toward the ocean's faint shimmer. The scale is staggering: on a peak July or August night, dozens of females nest simultaneously up and down the 35-kilometre shore.

When to go

Jul — Oct

Getting there

Nearest city: Limón.

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