Physalia

Known as “ Portuguese man of war” or Blue bottle

Marine, Polymorphic, and colonial coelenterate.

Gas filled medusoid bladder called pneumatophore (floating) is present.

Ventral side zooids are arranged in clusters called Cormidia.

Each cormidium consist of 3 kinds of polypoid zooids.

Division of labour among zooids – Gastro zooids are nutritive, Gono zooids are

reproductive and Dactylozooids are defensive in function.