How To Use Sickle-shaped In A Sentence

• The tail, or caudal fin, is large and sickle-shaped, to give short, rapid bursts of speed.
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• I think fish with lunate tail fins (meaning crescent or sickle-shaped) such as tuna, various jacks, and marlin can exert more proportionately more force than those with broad tails such as bass or trout. What Fish Pulls the Hardest?
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• Deinonychus, or "terrible claw" after the sickle-shaped talon on each hind foot, stood about 11 feet from head to tail and was a lithe predator.
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• The big grey animals with sickle-shaped dorsal fins and prominent beaks are bottlenose dolphins (immortalised by Flipper).
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