Step 3 - Add Dorsal and Pectoral Fins


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Next add the first dorsal and pectoral fins.  Note that the first dorsal fin is basically a curved equilateral triangle that originated above the axil (corresponding with the human armpit) of the pectoral fin.  The pectoral fin is about 50% longer than the first dorsal fin is tall.

 

ReefQuest Centre for Shark Research
Text and illustrations R. Aidan Martin
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