THE SECRET PLACE, THE SECRET PRIZE (V)

This week the secret place is an island nation. The permanent population is just over 100,000 (2011), and the island nation is composed of 32 atolls and one raised coral island, bordering the International Date Line.
The nation and the population is suffering a big threat, which one? what can explain that threat? What is the name of that place?
3...2...1...Ignition!!!
Let´s start the find!!!!!

This is amazing on Monday I had the right answer from Aida, 1st ESO bilingual student and from Ana, Sara P and Martin from 2nd ESO...Congratulations all of them!!!