An ocean (from Ancient Greek Ὠκεανός, transc. Okeanós, the sea of classical antiquity) is a body of saline water that composes much of a planet's hydrosphere. The word sea is often used interchangeably with "ocean". A soak in seawater is the point here. Seawater will kill just about anything, helps close and heal wounds, is cheap or free, can be used repeatedly, and is possibly to reproduce using Dead Sea Salts. Go to the beach. Change into your swimsuit, or go naked. Swim around for 30 minutes or more.