Box Jellyfish: The World's Most Venomous Marine Animal

Box jellyfish are dangerous sea creatures found in warm waters, with a cube-shaped body and long tentacles.

They inject a powerful venom that can quickly stop a human heart.

The Australian box jellyfish is particularly lethal, with enough venom in one to kill many adults.

When stung, people experience severe pain and can suffer long-term effects.

First aid involves using vinegar and seeking immediate medical help; antivenom is available, and scientists are researching new antidotes.

Awareness and prevention, such as wearing protective clothing, are crucial due to the jellyfish's expanding range and the rise in coastal tourism.