While we were staying at the hotel pre-cruise, we decided to do a warm-up dive. On the boat going out to the dive sight, the guide slowed the boat down for no apparent reason and told us to hush. Then, right in front of us about 20 feet away, a whale surfaced! It was absolutely amazing. We were so awed. We tried to grab our snorkels and jump in so the boat could pull us along and we could see it underwater, but we splashed too much getting in and it left.