Thankfully, the Shark Bay mouse population on Bernier Island is protected from the threats that have impacted those on the mainland, as this island is part of the Bernier and Dorre Islands Nature Reserve and lacks any exotic predators. Feral goats were eradicated in 1984, and public access is limited to day visits. Nevertheless, this restricted distribution left the species in a highly vulnerable position. Thus, a Recovery Plan was created for the mouse, which involved the translocation of populations to three other exotic predator-free island nature reserves, Doole Island (June 1993), North West Island (June 1999), and Faure Island (June 2003), and to Heirisson Prong, Shark Bay, on the mainland (November 1994), after intensive feral animal control had been undertaken (3) (5). The reintroduced populations have been monitored on an ongoing basis and restocking has occurred where necessary (3). However, the populations on Doole Island and Heirisson Prong have not persisted. It is believed that predation by Varanus lizards prevented the establishment of a viable population at these sites (5). To aid the translocation programs, a captive breeding programme was established in 1998 at Perth Zoo. It is vital that translocated populations become established and self-sustaining if this geographically restricted mouse is to be brought out of the danger zone, but so far these have had mixed success, and the future of this tiny mammal remains uncertain (3).