Marine animals can be fascinating and quite beautiful. However, you should not approach some of them. Certain fish and jellyfish are highly poisonous, and contact with them can sometimes be fatal.

A deadly jellyfish species has reportedly wiped out over 200,000 salmon in Scotland, marking what is believed to be the worst incident of its kind. The String of Pearls Jellyfish (Apolemia uvaria), ...

(Donald M. Jones / Minden Pictures) Mother bears have a fierce reputation, but they’re not the ones to worry about. Researchers led by the University of Calgary analyzed 59 fatal black bear attacks in ...