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.
Sponges - The Australian Museum
Watch out they Bight! Three new Carnivorous sponges found in Great Australian Bight - Scimex
New 'Fluffy' Crab Species Wearing Sponge Hat Discovered on Australian Coast - News18
The Sea Slug Forum - Chromodoris quadricolor
Porifera (sponges), class: Demospongiae
Purple-encrusting sponges - The Australian Museum
Geologist may have found 890-million-year-old sea sponges in ancient reefs of Canada's Mackenzie Mountains - ABC News
Fluffy' crab that wears a sponge as a hat discovered in Western Australia, Australia news
Spectacular Sponge Gardens!
Descriptive catalogue of the sponges in the Australian museum, Sydney. Sponges. Plate IX. Janthella basta,. Please note that these images are extracted from scanned page images that may have been digitally
Three new carnivorous sponges found in Great Australian Bight - Australian Geographic
Porifera (sponges), class: Hexactinellida
v. 4 (1901-1903) - Records of the Australian Museum - Biodiversity Heritage Library