How many tentacles does a jellyfish have?

Jellyfish are a diverse group of marine animals, and their tentacle count varies significantly across different species. Some have 8 or fewer tentacles, and others have up to 1,200 tentacles. For instance, the immortal jellyfish, which is remarkable for its ability to evade death by cycling repeatedly through its polyp and medusa forms, typically has between 8 and 90 tentacles, depending on whether it is an immature or adult specimen.

The lion’s mane jellyfish, one of the largest jellyfish species, is renowned for its impressive tentacle count. This species can have up to 1,200 tentacles, which can extend to remarkable lengths, making it a formidable predator in the ocean. These tentacles are grouped into eight clusters, each containing 70–150 tentacles. They are equipped with stinging cells that help capture prey, showcasing the jellyfish’s adaptation to its environment.

Box jellyfish, known for their potent venom, also have a significant number of tentacles. Each corner of their box-shaped bell typically has clusters of tentacles, which can extend up to 3 meters (9.8 feet) in length. These tentacles are not only numerous but also highly effective in capturing prey and deterring predators, highlighting the jellyfish’s evolutionary success.