Life cycle of jellyfish
· The lifecycle of the jellyfish consists of two phases,
Medusa and polyp
· The medusa phase are the initial process .
· It is when the jellyfish float among the plankton.
This is the reproductive stage.
· The eggs are fertilised from inside.
· Then they develop and turn into free-swimming planula larvae.
· After few days floating about in surface waters, the larvae stay to the bottom of
the sea, sticking themselves with each other at one end.
· There they develop into the second phase: polyps.
The polyp phase is when the jellyfish are stuck to coastal reef.
· They start to feed and grow.
· In spring, some of the polyps start to bud off immature jellyfish.
These are known as ephyra larvae.
· These grow into an adult jellyfish.
jayden galea