Unlike “The Odyssey,” however, “The Devil’s Mouth” features a mondo and super-hangry shark (honestly, how did Homer miss that one?). And not just any shark, a mondo, super-hangry bull shark that’s able to survive in salt and fresh water. Like pretty much every good, bad and ludicrous shark film ever, “The Devil’s Mouth” opens with carefree revels. Though stung, physically and emotionally, Sara carries on with a trip to the Devil’s Mouth caves because her recently deceased father visited them. Kathryn Newton as Sara, left, Tommi Rose as Adrienne, Lana Condor as Max and Nico Hiraga as James in the horror thriller “The Devil’s Mouth.”