Ocean conservationist, filmmaker and writer William McKeever appears today to speak about the role that sharks play in maintaining balanced marine ecosystems. Tonight’s program begins with an abridged screening of his film, Emperors of the Deep. Following the screening, he will discuss the film’s companion book, Emperors of the Deep: Sharks—The Ocean’s Most Mysterious, Most Misunderstood, and Most Important Guardians (HarperOne). William McKeever is on a mission to change everyone’s views of the mysterious creatures of the deep. He takes his readers on a pulse-pounding journey around the world and deep under the water’s surface—from the frigid waters of the Arctic Circle to the coral reefs of the tropical Central Pacific—to dispel the narrative about sharks (from Jaws to Shark Week)” which claims they’re terrifying underwater predators. Sharks, who have lived on earth for over 450 million years, have so far survived five extinction level events. While humans killed 100 million sharks last year, only 4 humans died from shark related attacks. As apex predators, sharks are crucial to the ocean’s health by maintaining reef and seagrass ecosystems.