My wife and I dove this site on a 3 dive package with the "Scuba Shack" staff. One orientation dive, one scooter (DPV), and one night dive. As was said, it's a VERY popular snorkel/swim site, so you have to watch out during the day. My wife and I surfaced behind a lady who freaked out because she thought we were some kind of sea monsters. The night dive was awesome, and if you have time and $$$ to do the DPV dive its well worth it. You'll go out to two "micro reefs" on boulders a little ways out from the main black rock formation. It's out into the big blue, so you'll be alone with your group. Max depth on the scooter dive for us was 41 feet. The "Scuba Shack" only has AL63's so if you want to do this without staff escort go down the concrete path along the beach to Whaler's Village to the Maui Dive Shop and get some AL80's (they also have multi tank packages). Personally I have to rate this as the #1 shore dive site on Maui, despite the crowds.