[Found here.]

If I’m not mistaken, that’s a juvenile rock shark. A subspecies of  Peridotite, the rock shark’s fierce appearance is merely camouflage, as these sharks are the slowest swimmers in the pool and pose no threat to humans.

As for “Shark Week,” I’m not sure of the origins, but it’s likely the result of an underground grassroots petition to congress; a benign conspiracy swimming just below the sonar, not unlike this Overnight Open Thread.