The islands contain a large colony of seabirds and have been designated a nature reserve since 1983.
The area was designated a strict nature reserve on 25 February 1938.
The area was granted protection in 1991, and was designated a nature reserve in 2007.
A 300 km tract of land including the lake and surrounding mountains has been designated a nature reserve.
Since 1938, the 7 to 8 feet high cliffs of Kesselaid have been designated a nature reserve.
Bird life on the island has been protected by legislation since the 1930s, and it was designated a national nature reserve in 1988.
In 1980 Holmöarna are designated a nature reserve.
The 325-acre fen, headwaters of the Waveney river, will be designated a national nature reserve.
The island of Jazirat al-Thawra has been designated a nature reserve.
After a large fundraising effort, the island was successfully purchased in April 2006 for £650,000, and designated a national nature reserve in December 2008.