Lance Cpl. Amber Martinez executes a ‘side stroke’ during the testing portion of the Advanced Swim Qualification Course at Ramer Hall, Quantico, Virginia, April 11, 2014. (Cpl. Christina O'Neil/U.S.

Get an in-depth look at training for the Navy SEAL PST with guidance from experienced SEAL officer and coach Stu Smith. From mastering the combat side stroke for the swim to optimizing calisthenics ...

"Sharking" refers to your elbow coming too high out of the water during the recovery of your arms after the kick in the side stroke, modified side strokes, or AKA combat swimmer stroke. Stay connected ...