A fin is a thin component or appendage attached to a larger body or structure that typically functions as foils that produce lift or thrust, or provide the ability to steer or stabilize motion while traveling in water, air, or other fluids. Fins are also used to increase surface areas for heat transfer purposes, or simply as ornamentation. Fish fins are used to generate thrust and control the subsequent motion, and other aquatic animals such as cetaceans actively propel and steer themselves with pectoral and tail fins. Fins can also be used as stabilizing fletching on arrows and some darts, and at the rear of some bombs, missiles, rockets, and self-propelled torpedoes.
It is important to note that "FINS" can also refer to a juvenile delinquency prevention program called "Families In Need of Services". This program is designed to assist troubled children and their families by providing information about various community resources and making appropriate referrals. The goal of FINS is to reduce the number of children involved in formal juvenile court by referring children and families to necessary services and programs, such as counseling, substance abuse treatment, tutoring, and many more.
