Known for its size and aggression, the great white shark is responsible for the most recorded shark attacks on humans.
Moray eels have sharp teeth and a strong bite, and their venom can cause intense pain and swelling.
Found in warm coastal waters, bull sharks have been known to swim into freshwater rivers and canals, making them a danger to swimmers and surfers.
Found in the waters around Australia and Southeast Asia, the venom from a box jellyfish sting can cause heart failure and death.
Another large predatory shark, the tiger shark has a wide range of prey and is known for its aggression.
The venom from a cone snail's sting can cause paralysis and even death.
Found in tropical waters, the stonefish has venomous spines on its back that can cause severe pain and swelling.
Pufferfish contain a neurotoxin that can cause paralysis and death if ingested.
The venom from a blue-ringed octopus bite can cause paralysis and death.
Lionfish have venomous spines that can cause severe pain and swelling.