Current aircraft stabilizers are designed to maximize the stability of an aircraft. However, current stabilizers are rather inefficient in fuel expenditure, as designs from nature seem to point towards an increasingly efficient design for stabilizers that can dramatically reduce costs of operation. Swordfish and other fish who operate at high speeds have evolved a crescent-shaped tail that aids in maneuvering as well as efficiency through a high washout ratio that reduces the boundary layer drag produced by the stabilizer, resulting in increased efficiency and minimum energy expenditure. Considering that aircraft tails currently account for approximately 20% of total aircraft drag, mostly due to form drag (drag produced due to the shape of the stabilizer), a new design for aircraft stabilizers may seek to provide increased efficiency, leading to reduced emissions and cheaper operating costs for airliners. Experimentation conducted on the crescent stabilizer in a subsonic wind tunnel found statistically significant reductions in drag for several angles of attack, leading to the conclusion that the crescent stabilizer provides increased efficiency and thus is advantageous for aircraft. Acknowledging the rise of budget airliners, this new design targets airline manufacturers seeking to provide customers with cheaper and more efficient aircraft designs. Moreover, by increasing energy efficiency, the stabilizer also targets hybrid electric aircraft manufacturers by reducing the energy usage per mile. Testing is currently being conducted alongside mentorship from scientists at the NASA Glenn Research Center in Cleveland, Ohio.