Here are two generations of Teen Titans in what has become a time honored Titans tradition... swimming in the Titan's Pool!
First up we have the popular 1980's New Teen Titans. Here are Dick (Robin) and Wally (Kid Flash) in all their speedo-clad glory! Oh, and for the cheesecake lovers out there, Donna's in a swimsuit too. From New Teen Titans Vol. 1 #16.
Next we have the "Jurgens" Titans from Teen Titans Vol. 3 #6. The team has just finished moving into their new HQ, and you know what that means, it's time to take a dip in the pool. The de-aged Atom & Risk are my favorite members of this team. (Edited on 4/24/16 to replace scans).