The Coral Triangle is the vast ocean in and around the Philippines, Indonesia, and Papua New Guinea. It's a lot of coral. It's a lot of fishes. It's a lot of beauty shots of destination-vacation tropical islands with their boat in the middle. This is nature documentary porn. It's a lot of slow panning beautiful nature shots. They do run into each other and start looking the same. It's like watching the aquarium in your dentist office. It's background television. I'm not really learning anything new. The narration keeps going and going. It lulls me to sleep, but it's a comfortable, joyful, wonderous sleep.