This icon is depicting a person swimming. The only the top portion of the person is shown with three wavy lines beneath it to signify water. One of the figure's arms is raised whereas the other one is facing down.
This Swim icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 5,500 icons, all in the same style and quality.