9. The “Underwater Amazon”, Indonesia

Called the Underwater Amazon and once considered to be the richest marine biodiversity, this diving spot was one of the best in Raja Ampat’s reefs. Unfortunately, that all came to a screeching halt when a British-owned cruise ship crashed right into the reef in 2017, severely damaging it.

Since then, the reef has been closed to the public to protect it and let it regrow to its former glory. It’s estimated that it will take a good 100 years or so until that happens, so most of us won’t be seeing that in our lifetime. It’s truly a tragedy.