Jellyfish and sea jellies are the informal common names given to the medusa- phase of certain Jellyfish have a complex life cycle; the medusa is normally the sexual phase, the planula larva can disperse The medusae of most species are fast growing, mature within a few months and die soon after breeding, but the .
Turritopsis dohrnii, the immortal jellyfish, is a species of small, biologically immortal jellyfish When sexually mature they have been known to prey on other jellyfish Most jellyfish species have a relatively fixed life-span, which varies by.
The lifespan can range from several hours (for hydromedusaes) to a few years in the polyp phase, with some never actually maturing into a an adult medusa.
Here's a peek at the life cycle of the jellyfish, all the way from fertilized egg to full- grown adult.
The polyp phase -- the asexual stage -- of a jellyfish's life begins when as a fertilized egg it is released from its mature mother. Polyp float freely in the ocean for.