Dash, Love and Splash
The silent film comedy, Dash, Love and Splash, was released on October 19, 1914. This ½ reel (5 min.) film starred Charley Chase. Chase appeared in more than 250 short comedies such as this one. Although I wasn't able to find any photos, for sure, young ladies in bathing suits were the featured attraction.
This movie was filmed on California's Santa Catalina Island, one of the prime locations for silent movies set on a beach.