michigal333 Posted September 30, 2012 #1 Share Posted September 30, 2012 Has anyone done the mini submarine adventure offered through the website "Cozumel Shore Excursions". I am a certified diver and my two friends are not; they want to do this in Cozumel - I'm just wondering how safe it is - how deep you go and what safety measures are in place to assure a person doesn't run out of oxygen while underwater. Link to comment Share on other sites More sharing options...
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