7) Marbled cone snails shoot out venom, which paralyzes its prey instantly. Many people mistakenly pick these up, thinking they are a harmless shell. It is believed that 36 people have died by this snail in the past 90 years. There is no known antivenin for this sting, so do not go picking up shells in Asia!

6) Pufferfish contain tetrodotoxin, which is 1,200 times more poisonous than cyanide. They have enough toxins to kill 30 adult humans! If they feel threatened, they will puff up to reveal spikes. Despite the danger they pose, many people still eat this fish. Many people have died when this fish’s toxins are not properly extracted.

5) Portuguese Man O’ Wars are usually called a jellyfish, but they are not. They are just related to them. These creatures float on top of water and are often seen on shore. They have painful tentacles that can reach up to 30 meters. They are rarely deadly but cause immense pain if stung.

4) The Beaked Sea Snake can be found in the waters of Asia and Australia. They have a bite 4 to 8 times more powerful than that of a cobra. Beaked sea snakes are also responsible for most of the deaths caused by sea snakes. Sea snakes are reportedly more venomous than land snakes as well.

3) Stone Fish camouflage themselves into the coral and rocky reefs of the ocean. This makes them hard to spot. They are also considered one of the most venomous fish in the world. They have 13 sharp, venom inflicting spines on their back. They cause immense pain and make breathing difficult.

2) Blue-ringed octopus is exceedingly small but can cause great damage. Their bite is 1,000 times more harmful than cyanide. They can even kill 26 people in just a few minutes! Their neon blue circles warn away predators. They are not very commonly seen, but if you ever encounter one… swim away!

1) Box jellyfish have what is thought to be one of the deadliest venoms in the world. The venom spreads all throughout the body, neutralizing any chance of escape. Many have reportedly gone into shock or died after the sting. Deaths from this creature range from about 50-100 per year.