This excursion was a good one but we were not able to enjoy the snorkeling because of the presence of stinging jellyfish that had sent many people to the hospital. We were told that the presence of the jelly fish was seasonal and we were forced to wear "sting suits" to enter the water. It is my opinion that we should have been told about the jellyfish season and. Had the option to cancel the tour. The day we were there a person was life flighted to the hospital because of jellyfish stings. The locals told us the presence of these jelly fish would soon come to an end. We would not have gone had we known of the risk. The setting, Green Island was a very nice place. The glass bottom boat trip lasted less than 15 minutes though. It was not the best experience.