We found a bubble cave. When the swell comes in the water rises, compressing the air.  When the swell goes out, the air pressure goes down.  Because the air is saturated with water vapor, the pressure swings cause the air to be alternately over-saturated then under-saturated about every 20 seconds or so.  As we look around in the cave, the air becomes foggy for about 10 seconds, then it becomes crystal clear for about 10 seconds, over and over again.  Here's a question for the scientists among you: at which extreme, high pressure (compression) or low pressure (decompression), does the mist appear??

The visibility was fantastic. The fish would just hover around the openings of the caves.
And this turtle is hanging out close to the surf pounding on the rocks.

Speaking of hovering, there were a few other creatures down there.

Spiny Lobsters live in the among the rocks and ledges
Some fish like the bottom for camouflage:
Peacock Flounder and the Titan Scorpionfish

Bandit Angelfish are rare and only found in Hawaii.
What a great dive!