Sponges 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.
New sponge crab species found off WA coast named after Charles Darwin's research boat - ABC News
Purple-encrusting sponges - The Australian Museum
Marine Biologists Discover Three New Species of Carnivorous Sponges
Three new carnivorous sponges found in Great Australian Bight - Australian Geographic
The crabs that wear sea sponges like a hat - Australian Geographic
Encrusting sponge found in Kimberley coral reefs
The Sea Slug Forum - Chromodoris lochi
Which fishes eat sponges? - The Australian Museum Blog
Porifera (sponges) Western Australian Museum
Astonishing diversity of western Australian sponge species uncovered with molecular technology
Sea Sponges Facts
The Australian Museum; Descriptive Catalogue of the Sponges in the Australian Museum Sydney by Robert Von Lendenfeld (2009, Trade Paperback) for sale online
New species of rare and delicate sponges found in Australia — Conker Nature
Australians discover furry new crab that wears a sea sponge as a hat Thom Dunn 5