Shot on GoPro Hero 8 Black. Interval photos at 0.5s, wide lens, 12 MP. Poorly lit with a 35W HID light with a video reflector.
First half of an overhang at the bottom of a channel through the reef dropoff. This has collected Spanish storage jars, WWII debris (barrels), golf balls, and modern garbage. There were a couple intact storage jars here, even!