Drowning Doesn’t Look Like Drowning (2010)
Also, most people don’t know how to swim.  When you ask a person if they know how to swim, when you’re headed to the beach, you’ll get:1 Sometimes: no way, I stay out of the water2 Usually: uh, sure, yup, I can swim3 Rarely: Totally, I used to be on a team.My favorite follow up to #2 is “could you swim 4 laps in a pool without ever touching the bottom or stopping to take a break?  That usually prompts a “what are you crazy, no way that’s super hard” response.  Then I inform the person that they do not know how to swim, and that they should be extra careful.