Sandbars
Formosa
PEI
The words island offshore refer to a island that is away from the coast. In general this term applies to banking that gets done out of the country also called offshore.
A tombolo. Don't be confused with a sand bar as they do not extend to connect to another island.
Tombolo
maya
a barrier island
buddha
That is a peninsula.
There are no active cinder volcanoes on the Australian mainland or Tasmania. There is an active volcano on the remote offshore territory of Heard and McDonald Island.
Australia has several offshore territories which are islands. These include: * Norfolk Island * Christmas Island * Heard & McDonald Island * Cocos (Keeling) Islands * Ashmore & Cartier Islands There is also the southern state of Tasmania, an island separated from the mainland by Bass Strait.
IcelandYou might be looking for Iceland. The part of Iceland that the Arctic Circle passes through is the offshore island of Grimsey, not the mainland.