Unlike humans, that start off as a single cell and develop into a baby that will grow into an adult, the Lion’s Mane jellyfish actually has multiple different life stages before it becomes an adult. These different stages offer different opportunities to reproduce.
Like humans, the adult stages of Lion’s Mane jellyfish reproduce sexually by combining male and female baby cells (gametes) to make new baby jellyfish. BUT they can also asexually reproduce in their ‘polyp’ stage, which is when they’re attached to a hard surface. In this stage, they simply reproduce by making copies of themselves and releasing them into the water, which will then grow up to become more adults!