3. Cone Snail
This has been very popular among collectors, but we recommend that you will not fall for the pretty appearance. Scientist says that just one drop of the cone snail poison is enough to kill 20 people. The respiratory system shuts down due to paralysis which causes death. This snail is sometimes called the cigarette snail. The thing is after you got stunk, you only have enough time to smoke one cigarette. On the bright side, you will really quit smoking.