They contain a poisonous cell called a nematocyte and their body shape divides into polyp and medusa forms.
One member of this phylum can cause a painful condition known as Irukandji syndrome; that condition is caused by one class of this phylum known as Cubozoa. These organisms reproduce asexually by dividing into segments in a process called strobilation and since they lack any real skeletal structure, their bodies are composed of a substance called mesoglea. They contain a poisonous cell called a nematocyte and their body shape divides into polyp and medusa forms. The Portuguese Man o' War is part of, for 10 points, this animal phylum that includes coral, sea anemone, and jellyfish.
One member of this phylum can cause a painful condition known as Irukandji syndrome; that condition is caused by one class of this phylum known as Cubozoa.
Cnidaria