Life undergroundVideo | Updated 5 years ago Dr Bill Humphreys Senior Curator, Terrestrial Zoology Caves and groundwater are only just giving up their biological secrets. The diversity of species recently found living here includes numerous groups of invertebrates and a few fishes. They typically lack pigment, are eyeless, and live their entire life underground. Many belong to ancient lineages that have been separated from their surface ancestors by the drying of the surface or by the movement of continents. Join Dr Bill Humphreys as he explores the dark and mysterious world of the subterranean, and unearths the riches from the Yilgarn and Pilbara. This lecture was recorded at the Western Australian Museum – Perth on 23 April 2010. This video recording was made possible with the support of Chevron Australia. View the discussion thread.