Rømø is currently the southernmost of Denmark's Wadden Sea Islands (a small uninhabited one called Jordsand was farther south, but sank in 1999, leaving behind only a sandbank).

Rømø is linked to the Danish mainland by a road running across a causeway, and the island also lies only about 3 kilometres (1.9 miles) from its German neighbour Sylt, to which it is connected by ferry.

There is also, among Denmark's share of the archipelago, a small island named Langli, which is to be found in the Ho Bugt north of Esbjerg.

Since that time, another spit has formed to the west and now shields Langli from some of the sea's more destructive tendencies.

Langli is nowadays home to a natural science station, housed in a villa built in the 20th century.