Biodiversity is the foundation of all life on Earth. It is fundamental to human well-being, a healthy planet, and economic prosperity for all people. We depend on it for food, medicine, energy, clean air and water, protection from natural disasters as well as recreation and cultural inspiration. 

The International Day for Biological Diversity is a United Nations–sanctioned international day for the promotion of biodiversity issues, celebrated annually on 22 May. The International Day for Biological Diversity falls within the scope of the UN Post-2015 Development Agenda’s Sustainable Development Goals. 

The theme for International Day for Biological Diversity 2025 is “Harmony with Nature and Sustainable Development”. It’s a reminder that true progress must go hand-in-hand with the protection of the natural world. 

But what does biodiversity really mean, and what role do we play in it? 

What is biodiversity? 

Biodiversity refers to the incredible variety of life on Earth. From the tiniest micro-organisms in the soil to towering trees, colourful birds, insects, fish, mammals, and even us, humans. It includes not just species, but the ecosystems they live in and the genetic diversity within each species. 

This diversity is not just beautiful, it’s essential. Biodiversity keeps our ecosystems healthy and resilient. It cleans the air, purifies water, pollinates our crops, regulates our climate, and supports the food chains we all depend on. 

Why does it matter? 

Biodiversity is the foundation of life. When we lose it, we risk the collapse of ecosystems and the many services they quietly provide us every day. A decline in pollinators means fewer crops. Damaged wetlands increase flood risk. Vanishing species unravel the natural balance that keeps our world in check. 

In short: biodiversity loss affects us all, and protecting it is not only an environmental responsibility, it’s a human one. 

Our role in harmony with nature 

Living in harmony with nature means making choices, big and small, that support rather than exploit the natural world. This includes: 

• Supporting conservation efforts 

• Using resources more efficiently 

• Protecting green spaces in our communities 

• Reducing waste and pollution 

• Teaching children the value of nature 

Intaka Island: where city and nature thrive together 

Intaka Island is living proof that urban development and biodiversity can coexist. Originally developed as part of Century City’s sustainable planning vision, Intaka is now a 16-hectare green heart within the city. Home to over 120 bird species, indigenous plants, and rich wetland ecosystems, it not only conserves nature but enhances the urban environment around it. 

It plays a vital ecological role in naturally filtering stormwater and supporting local biodiversity, while also offering an educational space where thousands of children and visitors connect with nature every year. 

A call to action 

On this Biodiversity Day, let us remember: we are not separate from nature, we are part of it. The choices we make today will shape the world our children inherit tomorrow. 

Whether you’re planting a small garden, reducing plastic waste, supporting local conservation, or simply taking a walk through a place like Intaka Island: you are part of the solution. 

Let’s choose harmony. Let’s choose a future rich in biodiversity.