Our Amazing Planet: Box Jellyfish

According to National Geographic, the box jellyfish, also known  as the sea wasp, lives in coastal waters off Northern Australia and throughout the Indo-Pacific. They are invertebrates, and measure about 20cm along each side and about  4.4 pounds. Their tentacles grow up to 3m in length. They have up to 15 tentacles, and each individual tentacle has 5,000 stinging cells. They are pale blue and transparent in color. Their life isn't very long in the ocean; it's less than a year. The box jellies are very advanced, unlike normal jellyfish. The box jellyfish is one of the world's most poisonous creatures. When attacked by this dangerous animal, the toxins attack the heart, nervous system and skin cells. If stung by a box jellyfish, a person usually dies either from the poison, heart failure or drowning due to shock. Those who survive feel pain for weeks and have scars."

-Briona Snavely