Top 10 Most Dangerous Aquatic Species

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6. Cone Shells

Belonging to the family Conidae, these gastropods live in mud and show very little signs of life. However, if picked up (because of their bright colors) they can bit with their harpoon like teeth and cause death. Their venom contains neurotoxins and is fatal.


7. Portuguese Man-of-War (Physalia physalis)

It is commonly mistaken to be a jellyfish because of its striking resemblance to them. Although its venom is not very potent, it does have the power to kill off the victim by cardiac arrest if instant medical attention is not received. Deaths caused by stings from this animal are very rare but they do occur.


8. Lionfish (Pterois volitans)

This is a small, spiny, striped, exotic creature found in some regions of eastern Atlantic, the Mediterranean and the Caribbean. Considered venomous, the lionfish has a typical way of turning upside down and exposing its spines. Although its venom is not fatal, it causes severe pain, headaches, and vomiting – unless medical supervision is received, the sting can take serious proportions.


9. Stonefish (Synanceia)

The genus Synanceia is popularly called stonefish, and consist of several species of small, shy, and sometimes very beautiful fish that are at the same time capable of stinging you with deadly venom if disturbed. Typically, stonefish stings occur because they are stepped upon, as they are hard to distinguish from stones under the water.


10. Fire Coral

These are marine organisms that are not actually coral and are typically members of the genus Millepora. Their stings are not fatal but can cause severe burns on the skin. It can become fatal if the victim develops an allergic reaction to the chemical injected in the sting.

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