We enjoyed the Hawaii Glass Bottom Boat. We found it more enjoyable to watch from the deck than to look through the two glass openings on the floor level. We went on the early morning outing. We saw a monk seal, fish, sea turtle, and even a bottlenose dolphin from watching from the deck! The driver of the boat told us it was unusual to see a bottlenose dolphin in the wild because they usually avoid the boats. It was a neat experience. If you decide on this activity, you will enjoy yourself. I often worry about getting sea sick, but I didn't experience that at all. It was pretty smooth sailing!
