Species of 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 are harmless to humans in the sea but some of the species are considered dangerous to humans and other creatures in the sea. Some of these poisonous stingers can cause temporary pain and can even lead to death. Learn more about Poisonous Jellyfish!