Which dive spot can we find the thresher sharks?
This would be Monad Shoal, south of Malapascua Island.
What experience level is needed to dive Monad Shoal to see thresher sharks?
You need to have at least an Advanced Open Water Diver license to dive Monad Shoal. However, if you only have Open Water Diver license, you can do Monad Shoal as your Deep Adventure dive as part of the Advanced Open Water Diver course.
If you have no diving license, you are not allowed to dive Monad Shoal due to safety requirement reasons.