Tropical.....years ago I was in Hawaii. Took a snorkeling tour out to a cove. On the way back the dolphins joined us. The little ones were first...they swam up to the boat and rode in the wake. Then they swam off and the middle size ones came --sometimes in pairs next to the boat. Then the grand finale....large ones were leaping and jumping -- in pairs....and swimming next to the boat. Got the chance to look one in the eye -- I swear he was smiling and KNEW they were entertaining us!!!! I had expected everything else I saw in Hawaii, but I didn't expect that and I'll tell you --that experience will be with me forever.