You have a small, bell-shaped medusa with 4 clusters of short tentacles - it is s native Anthomedusae or Bougainvillia rugosa.
If not you may have a Scyphozoan, like the common moon jelly, Aurelia aurita – see Introduction to Cnidaria.
You may use data, pictures,information etc. available ad the site, as long as you refere to the sourse.
The database as a whole is to be cited as follows:
NOBANIS. Available from http://www.NOBANIS.org. Data of access x/x/201x