Most of our planet is ocean, and we have explored very little of it. The other day I heard a story on the radio about James Cameron's adventure to the deepest part of the Pacific. He dove seven miles and filmed what I can only imagine to be incredible footage - I can't wait to see what is actually produced from it.
I grew up within driving distance to the Pacific, and I have vivid memories of exploring the beach and the water. The power of the waves is still with me; wiping out on my boogie-board was sometimes painful, but after a while I figured out it's best just to let the tide take over. Being rolled by the waves in this way is actually a fond memory, like wrestling with your dad - he may throw you around a bit, but that's what you wanted anyway! I love diving under water too, so I didn't mind if a couple waves held me down.
It's the life too - the teeming life in the ocean that makes it so beautiful. If you ever get the chance to explore a beach at low tide that is usually submerged, you must. A few years ago some family and I went to a spot in Oregon where the low tide traps 100s of creatures; if you're careful, you can step from rock to rock and observe things that would feel comfortable in a science fiction movie.
I have to at least mention the food - I could eat seafood every day for the rest of my life.