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The thresher sharks have an extreme example of this tail in which the upper lobe has evolved into a weapon for stunning prey. Bottom-dwelling sharks such as catsharks and carpet sharks have tails with long upper lobes and virtually no lower lobe. The upper lobe is held at a very low angle, which sacrifices speed for maneuverability.
The Atlantic sharpnose shark's maximum species length is known to be about 110–120 cm (3.6–3.9 ft). Although its average adult size tends to be about 91.4–99 cm (3.00–3.25 ft). Reports exist of these sharks living up to 19 years in the wild. [2] A distinctive feature is that juveniles have black edges on the dorsal and caudal fins. [3]
In the northwestern Atlantic, the bignose shark conducts a poorly documented seasonal migration, spending summer off the US East Coast and winter in the Gulf of Mexico and the Caribbean Sea. Individual sharks have been recorded traveling distances between 1,600 and 3,200 km (1,000 and 2,000 mi).
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The bonnethead (Sphyrna tiburo), also called a bonnet shark or shovelhead, [3] is a small member of the hammerhead shark genus Sphyrna, and part of the family Sphyrnidae.It is an abundant species in the littoral zone of the North Atlantic and the Gulf of Mexico, is the only shark species known to display sexual dimorphism in the morphology of the head, and is the only shark species known to be ...
They are managed by the Pennsylvania Bureau of Forestry, a division of the Pennsylvania Department of Conservation and Natural Resources. A reorganization effective July 1, 2005 shifted territory among several state forests in eastern Pennsylvania, resulting in the elimination of Wyoming State Forest and the creation of Loyalsock State Forest.
The Pennsylvania Wilds, or the Pennsylvania Wilds Conservation Landscape, is a predominantly rural and forested region in northern central Pennsylvania, mostly within the Allegheny Plateau. It covers about a quarter of the state's territory, but is home to only 4% of its population. It is one of Pennsylvania's 11 state-designated tourist regions.