Dangerous creatures found in water

Sea snake -
Adapted to a fully aquatic life and unable to move on land, sea snakes are highly venomous.

Blue-ringed octopus -
One of the most dazzling of mollusks is also recognized as one of the world's deadliest marine animals.

Great white shark - The fact remains, however, that the great white shark is responsible for by far the largest number of recorded shark bite incidents on humans.

Nile crocodile -
An apex predator, the Nile crocodile is capable of taking almost any animal within its range, including us.

Pufferfish -
The majority of pufferfish species are toxic and some are among the most poisonous vertebrates in the world. 

Stonefish -
All members of the stonefish family are toxic, dangerous, and even fatal to humans. In fact, they are the most venomous fish out there.

Lionfish -
Lionfish are known for their venomous fin rays, an uncommon feature among reef-dwelling fish along the American East Coast and Caribbean.

Sea lion -
Don't be fooled by the sea lion's cute exterior. When agitated or threatened, these super agile creatures can launch a swift attack.

Caribbean fire sponge -
There are approximately 5,000–10,000 known species of sponges found in the world's oceans.

Anaconda -
The common or green anaconda is the largest snake in the world by weight, and the second longest, after the reticulated python. 

Diving bell spider -
The diving bell spider is the only species of spider known to live almost entirely under water. 

Water moccasin -
The water moccasin, a species of pit viper, is the world's only semi-aquatic viper, and is native to the southeastern United States.

Hippopotamus -
A large, mostly herbivorous, semi-aquatic mammal, hippos are among the most dangerous animals in the world.

Sting ray -
Generally passive in nature, a sting ray will attack humans only when provoked.

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