Let me start by saying, this was a definite highlight of being on the big island, and that's saying a lot when this island has so many adventures on it! The crew, captain were simply unbelievable! So knowledgeable and fun! You leave your shoes at the dock you get your wet suit top and they also provide snacks and drinks! Short ride with awesome views and music, they inform you everything you need to know and to reassure you its worth it when you get in the dark water at night. Plus the guides are in the water If you need them, and if you dont they are still close by asking if all is good! These manta's are gentle giants, and they're incredibly smart its so awesome to see them interact with one another.DO IT this island has nothing but adventures and memories for you to take with you, leave your fears at home you won't need them