Jellyfish
Jellyfish can also reproduce both sexually and asexually. Almost all species of jellyfish are either male or female, however; there are a few species that are hermaphrodites. Here is where we see more evolution in the reproductive system; these more complex organisms reproduce sexually in order to create genetic diversity. When the jellyfish reaches a mature age it spawns daily. Spawning is the releasing of eggs or sperm into the water. Spawning is usually controlled by light, so the entire population of jellyfish will spawn at the same time of day. When a jellyfish releases the eggs and sperm into the water, they will meet to fertilize and grow into a new jellyfish. Since the sperm and eggs are unprotected, the ones that don’t fertilize will die in a short amount of time. In a few species of jellyfish the sperm will actually swim into the female jellyfish’s mouth, where it will fertilize the egg. Jellyfish can also reproduce by budding usually from the tentacles.