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Dorsal fin diagram with landmarks labeled. Fins allow the sharks to be able to guide and lift themselves. Most sharks have eight fins: a pair of pectoral fins, a pair of pelvic fins, two dorsal fins, an anal fin, and a caudal fin. Pectoral fins are stiff, which enables downward movement, lift, and guidance.
Nearly every fin of a shark is targeted for harvest, as highlighted in the diagram. The primary and secondary dorsal fins are removed from the top of the shark, plus its pectoral fins, and, in a single cutting motion, the pelvic fin, anal fin, and bottom portion of its caudal fin, or tail.
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The tail fin can be rounded at the end, truncated (almost vertical edge, as in salmon), forked (ending in two prongs), emarginate (with a slight inward curve), or continuous (dorsal, caudal, and anal fins attached, as in eels). Anal fins: Located on the ventral surface behind the anus, this fin is used to stabilize the fish while swimming.
Over the past several months, viewers have submitted videos of what appears to be a giant shark fin popping out of the water near the beaches in the Tampa Bay Area. The Florida Fish and Wildlife ...
The pectoral fins of Stethacanthus were composed of the triangular-shaped metapterygium observed in modern-day sharks, but had an additional long, metapterygial structure called a fin whip. These fin whips contain at least 22 axial cartilages and extended past the pelvic fins.
The stunning rally in US stocks this year caught Wall Street's top forecasters off guard, with most analysts far less upbeat heading into 2024.
Simplified diagram of shark net. Drum lines; Shark net – submerged net placed around beaches to reduce shark attacks on swimmers; Shark proof cage – cage from which a SCUBA diver can examine sharks more safely; Shark repellent – method of driving sharks from an area, object, person, or animal