In 1874 the German explorer Karl Leche returned from Madagascar and claimed to have witnessed a man-eating tree that was used by the local tribe for human sacrifices
The Tatzelwurm is a creature reported in the European Alps since the 1700s. It is said to be extremely venomous, having the ability to kill a human in a single bite.
In 2024 a one of a kind orange shark was spotted by scientists off of Costa Rica. This is the first and last time a shark like this has ever been seen.