Here it is folks, your comprehensive guide to semen in 500 words or less. First off, semen is not to be confused with seamen. Although many seamen are men, and most men have semen, and most semen contains 1% sperm, not all seamen can swim. On the other hand, living sperm within semen can swim and generally do so at a nautical speed of 7 inches per hour. Switching to air travel for semen, no seamen can fly but most semen can. In fact, semen blast off during the initial ejaculatory launch at a speed of nearly 30 MPH and can fly up to 3 feet in the air. This is exactly why the US Naval Command encourages their young seamen to where safety goggles during masturbation. Semen presents dangers to even the most experienced seamen. For more valuable information on semen, go to: http://www.accessrx.com/blog/sexuality-dr-neil-cannon/all-about-semen/