Rhizostome jellyfish

Scientific name : Rhizostoma pulmo

Semi-spherical umbrella, purple in colour, with fringed edge. The manubrium is well developed, ed it is divided in eight squat arms, with a spongy portion. This species lacks of marginal tentacles. It is a strong species, slightly blue or milky white in colour. It may reach a maximum diameter of forty centimetres and a length of one meter.
Less gregarious of other species, but it can be found in large aggregations anyway. It is the largest Mediterranean jellyfish. It is not poisoning for humans.