The jellyfish life cycle is a fascinating process that includes several different stages. Unlike many animals, jellyfish can change their body form during development. Understanding these stages helps explain how these unique marine animals grow and reproduce.
Jellyfish Reproduction
Adult jellyfish reproduce by releasing eggs and sperm into the water. After fertilization, the eggs develop into tiny larvae called planulae. These small, free-swimming larvae move through the ocean before settling on a suitable surface.
The Polyp Stage
Once a planula attaches to a surface, it develops into a polyp. The polyp looks different from an adult jellyfish and remains attached to a surface. During this stage, it feeds on small organisms and continues to grow.
Some jellyfish polyps can produce new polyps or develop structures that eventually become young jellyfish. This stage is an important part of the jellyfish life cycle.
Young Jellyfish
The developing jellyfish eventually separates from the polyp and enters the water as a tiny juvenile called an ephyra. It gradually grows and develops the familiar bell shape and tentacles of an adult jellyfish.
Adult Jellyfish
As the jellyfish matures, it becomes capable of reproduction and begins the life cycle again. The exact life cycle can vary between jellyfish species, but these stages demonstrate the remarkable transformation of these ocean creatures.