Yeah, that site is called Garden Eel Cove, named for all the garden eels that poke up through the sand flats that extend seaward from the inshore rocky reef. We did a twilight dive there during my visit, just a couple of weeks after Sarah was there. The terrain there is interestingly barren, probably from all the years of divers planted to and kicking around on the bottom. The campfire area really looks just like any campfire pit and surrounding, sooty, sandy expanse.
The night I was there, Nov 8, we were treated to 11 mantas, at least two of which I immediately recognized in Sarah's video. I'd got the names of a few of them, but forgot them by the time we'd got back to the dock. It's astonishing the way they fly right at your head and then veer upward at the last second. I got my head grazed by a few of them. I was glad I'd brought my own primary light, which was way brighter than the ones they handed out on the boat.