1. Box Jellyfish
There are over 50 species of box jellyfish with extremely p̫o̫i̫s̫o̫n̫. The most p̫o̫i̫s̫o̫n̫ous one is Chironex fleckeri, or the sea wasp, with one s̫t̫i̫n̫g̫ that lead you to ɖєɑɖ. Jelly fish are most likely to appear from November to March every year. If you get stünġ, call a̫m̫b̫u̫l̫a̫n̫c̫e̫ at once.
2. Blue-Ringed Octopus
All of octopuses are v̫e̫n̫o̫m̫o̫u̫s̫, but the most d̠a̠n̠g̠e̠r̠o̠u̠s̠ octopus is Blue-Ringed Octopus with 1,000 times more p̫o̫i̫s̫o̫n̫ than cyanide. If you be bitten by them, you may not realize them because the s̫t̫i̫n̫g̫ was too tiny. Within 20 minutes, the result is…
S̫t̫i̫n̫g̫rays are commonly found in the shallow coastal waters of temperate seas. They spend the majority of their time inactive, partially buried in sand. The underside of s̫t̫i̫n̫g̫rays may produce vᴇɴoм, which can be f̠a̠t̠a̠l̠ to humans, and which can remain d̠e̠a̠d̠ly even after the s̫t̫i̫n̫g̫ray’s ᴅᴇᴀтн. In Greek mythology, Odysseus, the great king of Ithaca, was k̫i̫l̫l̫ed when his son, Telegonus, s̠t̠r̠u̠c̠k̠ him using a spear tipped with the spine of a s̫t̫i̫n̫g̫ray.
4. Beaked Sea Snake
It is also known as the hook-nosed sea snake, the common sea snake, and the Valakadyn sea snake. Just 1.5 milligrams of its vᴇɴoм, rated four to eight times as тoxιc as cobra vᴇɴoм, can cause ᴅᴇᴀтн to humans but they are not known to a̠t̠t̠a̠c̠k̠ humans often. Despite their vᴇɴoм, these snakes are eaten by inshore predators, such as fish and estuarine crocodiles. Beaked sea snakes are primarily found around the coast and coastal islands of India.
Crocodilians are opportunistic predators that are at their most d̠a̠n̠g̠e̠r̠o̠u̠s̠ in water and at the edge of water. Several species are known to a̠t̠t̠a̠c̠k̠ humans and may do so to defend their territories, nests, or young. The Nile crocodile has a reputation as the biggest k̫i̫l̫l̫er of large animals, including humans, on the African continent. It is widely distributed, found in many habitats and cryptically colored. From a waiting position with only its eyes and nostrils above the water, it can lunge at drinking animals, fishermen, bathers, or people collecting water or washing clothes. Once s̠e̠i̠z̠e̠d and d̫r̫a̫g̫ged into the water, there is little chance for the v̫i̫c̫t̫i̫m̫ to e̠s̠c̠a̠p̠e̠.
6. Great White Shark
The Great White can do the most dámágé. Sharks are responsible for thousands of unprovoked a̠t̠t̠a̠c̠k̠s on humans across the globe since the year 1580, reports the International Shark A̠t̠t̠a̠c̠k̠ File. When a great white does b̫i̫t̫e̫ a person, it only takes one exploratory b̫i̫t̫e̫ and quickly realizes that the person is not its preferred prey. Unfortunately due to their very large size, even an exploratory b̫i̫t̫e̫ can be f̠a̠t̠a̠l̠ or extremely t̠r̠a̠u̠m̠a̠t̠i̠c̠.
7. Flower Urchin
Don’t let this sea urchin’s beauty fool you. Each of its “flowers” is actually a tentacle with a little jaw (called a pedicellaria) that can inject тoxιc vᴇɴoмs and potentially k̫i̫l̫l̫ you. Let’s just say there’s a reason that this f̠e̠r̠o̠c̠i̠o̠u̠s̠ “flower” was named the most d̠a̠n̠g̠e̠r̠o̠u̠s̠ sea urchin in the 2014 Guinness Book of World Records.
8. Electric Eel
The electric eel—not actually an eel, by the way—gets its name from the way it a̠t̠t̠a̠c̠k̠s and k̫i̫l̫l̫s its predators and prey. Its body contains organs filled with nearly 6,000 electrolytes that store electricity like small batteries; when something (like, say, a human) gets close, the not-actually-an-eel will discharge volts of electricity and s̠h̠o̠c̠k̠ the i̠n̠t̠r̠u̠d̠e̠r̠, sometimes to ᴅᴇᴀтн…
9. Crown-of-thorns Starfish
Generally about 13 inches in diameter, the crown-of-thorns starfish is larger than its benign, literally washed-up relatives on the seashore. This coral-loving creature is covered in p̫o̫i̫s̫o̫n̫ous spines that cause intense, immediate p̫a̫i̫n̫ las̫t̫i̫n̫g̫ for up to three hours.
Straight out of the stuff of nightmares, the candiru feeds on b̠l̠o̠o̠d̠ and has been found feeding on the u̠r̠e̠t̠h̠r̠a̠s̠ of swimmers. Once it penetrates, it can cause i̠n̠f̠l̠a̠m̠m̠a̠t̠i̠o̠n̠, h̠e̠m̠o̠r̠r̠h̠a̠g̠e̠, aand in s̠e̠v̠e̠r̠e̠ cases, ᴅᴇᴀтн.