 Specimens of the pobblebonk ("Limnodynastes dorsalis") and the turtle frog ("Myobatrachus gouldii") were collected from the Houtman Abrolhos during the Percy Sladen Trust Expedition of 1913 and 1915, but no amphibians have been recorded on the islands since that time.260 species of benthic algae have been recorded at the Houtman Abrolhos.This figure comprises 178 species of red algae (Rhodophyta), 50 species of brown algae (Phaeophyta) and 32 species of green algae (Chlorophyta).