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I don't mind diving as your in the same dimension as everything else.

I have recently done some snorkeling. To tell you the truth, it is a little more scary because I begin to look into the distance under water visualising a shark swimming towards me lol

At least you can see and react (any way possible). Do you dive?

Just free dive and snorkel a bit :) No deep diving with tank, my ears and nose cant handle the compression.