We will be closed Dec. 19th & 20th.

Fin vs. Flipper

fins

 

Fins have no true bones or skeletal structure within and are composed primarily of cartilage. A flipper has a bone structure as well as cartilage, joints, and tendons. If  you x-ray the flipper of a dolphin it looks almost identical to a  human arm from the shoulder down to the fingers.

 

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