So glad to hear that you were happy with the choice of boat! What I think is special about the Similans, as compared to other areas you listed (all of which I love for various reasons), is the underwater topography. I've dived extensively throughout the region, and I think our boulder sites are quite special. It's true that some of the hard corals, particularly the staghorn forests, were damaged by the bleaching even a couple of years ago, and that sticks in one's mind at places like Koh Bon, but the coral is coming back, gradually. Some of the deeper sites still have abundant, healthy hard coral, but the sloping reefs on the east sides of the islands tend to be fairly shallow, and therefore suffered more damage than the deeper sites. Richelieu, of course being out in the open ocean with no shallow sloping reef, escaped the worst of the damage. As for anemones, we actually have a site with even more of them than on Richelieu, believe it or not! It's called Anemone Reef, and it's a local dive from Phuket.
It's good to read these first-hand accounts. Thanks so much for sharing!
It's good to read these first-hand accounts. Thanks so much for sharing!