This was an incredible experience and a must do if you are visiting Big Island. The guides were great and I felt very safe as they have a board you can hold on to and a guide nearby anytime you wanted to go back to the boat. The boat ride was very rocky. Not recommended for anyone who easily gets sea sick. You may also want to bring your own snorkel if you have one. The mask was good, but I had to constantly clear the snorkel.