Eugenie Clark, American biologist and academic; noted ichthyologist (born 1922)

Eugenie Clark, popularly known as The Shark Lady, was an American ichthyologist known for both her research on shark behavior and her study of fish in the order Tetraodontiformes. Clark was a pioneer in the field of scuba diving for research purposes. In addition to being regarded as an authority in marine biology, Clark was popularly recognized and used her fame to promote marine conservation.

February 25 is the 56th day of the year in the Gregorian calendar; 309 days remain until the end of the year.