a car from the 1950s with 'fins' on the back
a fish with blue scales and spiny 'fins'
a 'finned' creature [=a fish]
(..) - Well? Well, under the circumstances, I’d say the ability to pilot this thing is irrelevant. Strap yourselves in. Open all hatches. Extend all flaps and drag fins. - R-D : “Uh-oh” - We lost something. Not to worry. We are still flying halfa ship. - - Now we’re really picking up speed. (..)2005 Star Wars: Episode III - Revenge of the Sith