The giant Gippsland earthworm may be as old as you or I

The giant Gippsland earthworm [up to one meter long; southern Australia]  is more often heard than seen. As these subterranean creatures move about in their tunnels they produce sounds like water going down a plughole, or more occasionally like a toilet being flushed....The worms are long-lived. They may be as old as you or I.

    --From a  review of David Attenborough's Life in the Undergrowth by Tim Flannery, the Times Literary Supplement, 2 April 2006