• Known as ‘Jelly Fish’

• Large sized, Floating, Free swimming medusoid marine coelenterate.

• Body is gelatinous and umbrella shaped.

• Marginal balancing organ ‘Tentaculocytes’ are present.

• Body has upper ex- umbrella and lower Sub- umbrella surfaces.

• Polystomatous (Many mouthed) conditions is seen.

• Oral arms are 4 in number with several roots like tentacles and fringed out growth called scapulets.

• Mucus cells and cnidoblasts for food collection.