Our family of four took this snorkeling trip because we wanted to see some up close underwater sea life and the sea turtles delivered. My wife and I had one come up for air quite literally right in front of us and I swear he looked right at us and said hello with his fin. I wish I had a go pro to have captured it. It was pretty cool. Until a jack ass with a go pro cut right in front of us and started to touch the turtle which is illegal to do and everyone on board was notified not to touch the turtles.
The water is about 20’ deep, so your not snorkeling in shallow water where you are up close to the coral reef etc, so if your looking for that kind of experience you won’t likely have it. Frankly you can’t even get into Hanauma Bay for that experience, so swim with the sea turtles and trigger fish instead, you will see lots of fish and from a distance some yellow tangs too. We enjoyed this as a family.