2 February each year is World Wetlands Day. This day marks the date of the adoption of the Convention on Wetlands on 2 February 1971, in the Iranian city of Ramsar on the shores of the Caspian Sea. Each year since 1997, the Ramsar Secretariat has provided materials so that government agencies, non-governmental organizations, conservation organizations, and groups of citizens can help raise public awareness about the importance and value of wetlands.

More information:

http://www.ramsar.org/cda/en/ramsar-activities-wwds/main/ramsar/1-63-78_4000_0__