surflineのインスタグラム(surfline) - 9月23日 07時30分

In 1961, George Greenough fashioned the first “high-aspect-ratio” flex fin, patterned after a tuna tail.
To kick off #FinWeek, a whole week of features dedicated to surfing’s least-understood equipment, check out our tip-to-base guide to the remarkable history of fins on Surfline brought to you by @futuresfins. Have a question about fins? Ask us in the comments below and we’ll pass it along to our pannel of experts to be answered later this week. Photo: John Witzig

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