Sticking with sharks for a moment, the hammerhead shark is generally not that dangerous to humans, with only 3 of the known 9 breeds to hammerhead ever be recorded attacking a human unprovoked
In the 1996 film "Flipper", starring Elijah Wood and Paul Hogan, the big monster that Flipper and his dolphin mates have to defeat is a giant hammerhead, who is said to have sunk ships all by himself. Of course knowing what we know about hammerheads, this would be highly unlikely in real life. The hammerhead, named "Scar" due to scars on it's body, actually roars at one point as well, which we know that sharks can't actually do
So basically the makers of the film are just another set of ones who vilify sharks unreasonably