[3] All of the islands in the Haparanda archipelago have emerged in the last 1,500 years or so, as the bed of the bay has risen due to post-glacial rebound following the last ice age.

[4] The island would have first emerged as a reef, but now contains moorlands, dunes, beaches, dense woods and meadows.

[5] The moorlands and dunes are in the south of the island, while the north has wetlands and deciduous forest.

[2] The island's flora include meadows, heath and forests of pine, birch and especially aspen.

The island provides a varied habitat for over two hundred bird species, which use it for nesting or resting.