Titan Triggerfish
The possibilities of a shark attempting to attack you while diving are extremely low, but the feisty Titan triggerfish has a better chance of biting you, according to Undercurrent, a diving website. The creatures, which can be found in coral reefs from Australia to Thailand, have been known to attack divers even when they haven’t been provoked. Titan triggerfish are stunning, but divers know to keep a safe distance.
Lionfish
Dorsal spines that look like a lion’s mane may be why the lionfish got its name, according to experts. Unlike the lionfish, which has fangs and ferocity, the lionfish relies on the venomous sting of its spines, which can cause pain and respiratory failure and even paralysis in the most extreme cases.