There is a particular jelly off the coast of Australia that will kill you within minutes and you wont even notice it sting you nor see it because its like the diameter of a penny. I don't remember the name but that thing is the stuff nightmares are made of. Little dangerous critters are the most scary to me.
Scorpions! I unknowingly stepped on a half dead scorpion, and didn't realize it until I turned around and saw it. I just stood there kinda freaking out. It was over five inches long, not including the tail!
so called human.the fact that they can possible do any thing and they fact that they can be dimwit sometimes scares me a lot.stupidity with power is one step away from being the greatest weapon of mass destruction