Learn more about poisonous jellyfish!

The jellyfish is one of the oldest living creature in the sea. They’re often called jellies or sea jellies instead of jellyfish. Most of the jellyfish species in the sea are harmless to humans, but some of the species are considered dangerous to humans and other creatures. Some of these poisonous jellyfish stings can cause temporary pain, and some can even lead to death. Learn more about poisonous jellyfish!