This experience was amazing! The divers are with you the entire time you are under the water, so if you need to go up for any reason, they will bring you back to the boat. You can breathe normally under the scooter helmet thing. The boat you take to get to the scooters does get very turbulent with the waves, so if you are prone to motion sickness, I would recommend taking some Dramamine before doing this adventure. So worth it!