Related Clues:

• Take a dip
• Capital of Afghanistan
• Do some laps
• Start a triathlon
• Crawl from lap to lap?
• Enjoy a pool
• One way to travel
• Utilize a sidestroke, e.g.
• Sink's opposite
• German submarine
• Cross the Rubicon
• Emulate Mark Spitz
• Take to the pool
• Go for a dip
• Seem to whirl