Wiktionary
shark-finned
a. Having one or more shark fins or resembling shark fins.
Usage examples of "shark-finned".
My idea was that as usual in that show the chemical tanker would leave the depot, its driver complaining of chest pains, the Sea Scouts would set out in their kayaks despite warnings on the radio of bad weather, the bickering couple would begin working on their house not having seen what we had seen, that the power saw with the whirling silver shark-finned blades was faulty and unsafe.