Therasia is the smallest island in the volcanic island group of Santorini.
==== Microcontinental islands ====A special type of continental island is the microcontinental island, which is created when a continent is horizontally displaced or rifted Examples are Madagascar and Socotra off Africa, New Caledonia, New Zealand, and some of the Seychelles
There are two main types of islands in the sea; continental and oceanic

