Sponges

Sponges (Phylum Porifera) are simple colonial animals. They have no real organs and their body tissue is made up of fibre-like protein, which is just like a bath sponge.

About Porifera

The sponge gets its structure from hard, multi-pointed rods called spicules.

Sponges up close

Find out more about some sponges found in Australian coastal waters.