Around 13 percent of the worlds coastline is made up of barrier islands. The formation of the barrier islands have been studied for over 150 years. there are three main theories if how they were made; the submergence theory, the split accretion theory and the offshore bar theory.
This is the aerial barrier island. It is very beautiful as you can see and is why it attracts many tourists. Tourists could swim in the crystal blue waters or go hang out at the beach. Or they could go explore and do fun activities at shore. Like go on a hike, a mountain bike tour or go fishing The barrier islands are great for all kinds of tourists. http://www.greatbarrierislandtourism.co.nz/thingstodo/