Swimming

Swimming is a skill that involves using one's own body, to navigate through bodies of water. It is often done recreationally, however it is often done for certain occupations as well. For example, a U.S. Navy SEAL uses this skill for missions. Perhaps the greatest swimmer in the entire world is Aquaman, the king of Atlantis.

Species that have the ability to swim
And several others...
 * Whale
 * Human
 * Atlantean
 * Fish