Lookingsouth from a sand dune into the main beach area and the boat ramp of Coral Bay. In the south of that yellow sand is the Paradise Beach. The white line near where the ocean meets the sky marks the outer reef.
Spangled emperor (Lethrinus nebulosus) - blue lines on the cheeks and blue spots on the scales - that is basically how you can tell this one apart from its similar looking relatives. More info is here.
I saw many of this fish when I was snorkeling near the main beach. The great thing about them is that they would swim to you and around you, without showing the slightest sign of being camera shy. Maybe they were simply "inquisitive" - a word that many marine life writers like to use. Most of the ones I came across were probably 2 feet or longer.
Left: Another spangled emperor with an encrusting sponge or just corals in the background. Right: Blue-tipped staghorn corals (?)
The giant clam (Tridacna species) was everywhere. I just learnt that the pretty patterns on the mantle are contributed by some microscopic algae living within the mantle tissue. This reminds me of the symbiotic algae living within the bell of the white-spotted jellyfishand the ones within corals.
Corals whose names I don't know.
Bleached patches in a coral colony
This brown one that looks like a blanket has very pretty pinkish, purplish edges.
These rock melons (except for one) are the brain corals (Platygyra species).