A kidnapped surfer named Zephyr (Hassie Harrison) reacts to an alarming act of violence in Sean Byrne’s snarky, sharky Australian thriller “Dangerous Animals.” Courtesy of IFC Films

“Dangerous Animals” — 2.5 stars

Sean Byrne’s snarky, sharky Australian thriller “Dangerous Animals” poses no threat to the titleholder of the greatest aquatic-vertebrate-serial-killer movie ever made.

Fifty years ago this month, Steven Spielberg’s “Jaws” opened in theaters and seismically shifted Hollywood from its collective desire to make the great American movie to a collective desire to manufacture the great American $100-million box office hit, all while inspiring the formation of the killer-shark subgenre.

Meanwhile, the unapologetically lurid B-movie “Dangerous Animals” (the titular characters turn

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