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.
Snorkelling gives you the freedom to swim or float at your own pace observing the marine world from the surface. Swim down amongst the kelp gardens and watch the fish cruising by and the molluscs
going about their business.