Sea Turtle Light Pollution and Nesting Disruption

Artificial light pollution from coastal development disorients nesting sea turtles and their hatchlings, causing reproductive failures and mass mortality on beaches worldwide.

Key Facts

Seven species of sea turtle nest on beaches globally, all are threatened or endangered
Hatchlings use moonlight reflecting on the ocean to orient toward the sea
Artificial lighting causes hatchlings to move inland where they die from dehydration or vehicles
Nesting females avoid well-lit beaches, causing population-level reproductive decline
Sea turtle-safe lighting using amber wavelengths reduces disorientation by over 90%

Welfare Considerations

Sea turtles have navigated by celestial and oceanic light cues for millions of years. Coastal development that floods beaches with artificial white light disrupts this ancient navigation system with devastating effect. Disoriented hatchlings traveling inland face dehydration, exhaustion, and predation. Nesting females bypass illuminated beaches, reducing reproductive output for already-endangered populations. The solution — switching to turtle-safe amber lighting — is technically straightforward and economically feasible, but requires coordinated action from municipalities, hotels, and homeowners.

What You Can Do

Advocate for sea turtle-safe lighting ordinances in your coastal community
Turn off visible coastal lights during nesting season (May-October in most areas)
Support organizations monitoring and protecting sea turtle nesting beaches
Participate in or donate to hatchling disorientation rescue programs