Forgot to mention, there is a closer reef sanctuary to Puerto Gallera (Mindoro) that is worth checking. It is called the Verde Island (Batangas) Passage Marine Bio Diversity Conservation. It is an island before you reach Puerto Gallera (Mindoro). About 45 minutes boat from Puerto Gallera.
here's a dive video
https://youtu.be/pkc_I7Lu5yc
here's a Documentary video
https://youtu.be/GaJO8Xl63V0
There are tons of amazing coral reefs in the Philippines, enjoy your trip.
