History: The United Nations General Assembly, by its resolution 55/201 of 20 December 2000, proclaimed 22 May as The International Day for Biological Diversity, to increase understanding and awareness of biodiversity issues. The date designated for the day was chosen to commemorate the adoption of the text of the Convention on 22 May 1992 by the Nairobi Final Act of the Conference for the Adoption of the Agreed Text of the Convention on Biological Diversity.

Theme 2017: Biodiversity and Sustainable Tourism

This theme has been chosen to coincide with the observance of 2017 as the International Year of Sustainable Tourism for Development as proclaimed by the United Nations General Assembly in its Resolution 70/193 and for which the United Nations World Tourism Organization is providing leadership. Tourism relates to many of the 20 Aichi Biodiversity Targets. Celebration of the IDB under this theme therefore provides an opportunity to raise awareness and action towards the important contribution of sustainable tourism both to economic growth and to the conservation and sustainable use of biodiversity. Furthermore, the theme also provides a unique opportunity to contribute to ongoing initiatives such as the Sustainable Tourism Programme of the 10-Year Framework of Programmes on Sustainable Consumption and Production Patterns and to promote the CBD Guidelines on Biodiversity and Tourism Development.