The great white frilled shark
In the ocean, a great white frilled shark has both species' features and abilities while being able to be in hot and cold water and eats all things land and sea but makes an exception for its kind feasting in a fast frenzy. They can detect malignant liars especially humans that are exactly like that which anyone that is that kind of person at any time they enter the ocean a great white frilled shark will immediately head for them and pursue them especially if they have any kind of cut when they get in and it's bleeding. They then eat that person.