What roles do lifesavers have?

What scuba certifications are available that are NOT PADI? Why did Michael Phelps started swimming? What are cubas major bodies of water? What are Waite Park MN city ordinances to dumpster dive? What are arctic canoes called? Can a mermaid have a bra? What is salt mainly used for today? When you see fog or clouds you are seeing water in what? What might be wrong when the pool will not backwash when trying to open it for the summer? Does the strait of Dover connects the English channel to Mediterrianean? What is de powder made of and if it's safe? How do the judges normally record the results of swimmers in a swimming competition? What was Michael Phelps best swimming style? Is snorkeling around sunken ships safe? What is a submerged swim? How deep is 48 inch pool? Is lead buoyant? Im taking care of a friends pool while they are gone and it turned green yesterday and all I have is liquid chlorine and a fliter AND you need to get it cleaned before they get back HELP? What piece of safety required on every canoe and kayak? Name a reason why a man would be embarrassed to go swimming?