Leopard shark

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Leopard sharks
Wound caused by a leopard shark that left one of its teeth in the torso of Charlotte Brynn during her attempt to cross the Catalina Channel in August 2013
noun - The leopard shark (Triakis semifasciata) is a species of houndshark found along the Pacific coast of North America from the state of Oregon in the north to Mazatlán, Mexico in the south.

Typically measuring 1.2–1.5 m (3.9–4.9 ft) long, this slender-bodied shark is immediately identifiable by the striking pattern of black saddle-like markings and large spots over its back, from which it derives its name. Large schools of leopard sharks are a common sight in bays and estuaries, swimming over sandy or muddy flats or rock-strewn areas near kelp beds and reefs. They are most common near the coast, in water less than 4 m (13 ft) deep.

Active-swimming predators, groups of leopard sharks often follow the tide onto inter-tidal mudflats to forage for food, mainly clams, spoon worms, crabs, shrimp, bony fish, and fish eggs. Most leopard sharks tend to remain within a particular area rather than undertaking long movements elsewhere, which has led to genetic divergence between populations of sharks living in different regions.

Harmless to humans, the leopard shark is caught by commercial and recreational fisheries for food and the aquarium trade. This species is mostly fished in the waters off California where, after a period of population decline in the 1980's, new fishing regulations in the early 1990's reduced harvesting to sustainable levels. The International Union for Conservation of Nature has assessed this species as of Least Concern, while noting that local stocks may easily become over-fished because of the shark's slow growth and limited migratory habits.

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