Kauehi Atoll, Tuamotu Archipelago, French Polynesia

The shape of life at sea. International Day for Biological Diversity

Observed each year on May 22, International Day for Biological Diversity is a global reminder that life on Earth is richer—and more fragile—than it appears. Established by the United Nations, today highlights why protecting plants, animals and ecosystems matters for food, medicine, climate stability and everyday well-being.

Few places reveal our planet's secrets with such clarity as Kauehi Atoll, seen here from above in the Tuamotu Archipelago of French Polynesia. Its thin coral ring encloses a vast turquoise lagoon, shaped over millennia by living reefs and sheltered currents. Kauehi's ecosystem is part of Fakarava Biosphere Reserve and supports coral communities, fish nurseries, seabirds and island vegetation adapted to life between ocean and sky.

For centuries, Polynesian navigators understood this balance, relying on healthy lagoons and reefs for survival and culture—a relationship still reflected in the atoll today. On International Day for Biological Diversity, landscapes like Kauehi remind us that safeguarding nature protects stories, cultures and futures across our shared planet.