1
Jellyfish are one of the oldest forms of life on Earth, with fossils dating back more than 500 million years.
2
Despite their name, jellyfish are not actually fish. They belong to a group of invertebrates called cnidarians, which also includes corals and sea anemones.
3
Jellyfish have soft, gelatinous bodies composed mainly of water. Their bodies are transparent or translucent, allowing light to pass through.
4
Jellyfish lack brains, hearts, and other complex organs. Instead, they have a simple nervous system called a nerve net, which helps them respond to their environment.
5
Jellyfish have lengthy, venomous tentacles. These tentacles hunt and defend. Some jellyfish are harmless.
6
Jellyfish have a complex lifecycle with medusa (adult) and polyp (attached) stages. They reproduce sexually and asexually.
7
Jellyfish can be found in every ocean, from surface waters to the deep sea. They are highly adaptable and can thrive in a wide range of marine environments.