Kambo - Scuba diving would be great! Snorkellings as close as I've gotten and always had something soothing about it. It's a different world down there. Everything floats and sways sooooooooooo slowly. Watching the fish at the aquarium is relaxing too.
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Cool, have an aquarium although only one fish left as small kids keep killing fish by overfeeding or throwing in their porridge
So now playing FB Fish World.
As for Scuba - yes I want to be underwater like Jacques Cousteau. Am sure its as nice you describe it