Try a PADI Discover Scuba Dive. It gives you the perfect introduction to the underwater world . A little theory followed by a short snorkel then on with equipment and take your first breaths to
experience and explore the marine world.
Scuba diving is a mind blowing way to explore what seems like another world. It feels like you're ready to go to the moon with all the equipment and you sound a little like Darth Vader from Star
Wars, but once underwater observing the marine life and they're interactions you forget about all of that in a moment of awe and it feels natural.