From Wikipedia (text authorized for use under creative commons):
Christmas Island is an island nature reserve, with an area of 63.49 ha, in south-eastern Australia. It is part of Tasmania’s New Year Island Group which includes the much larger King Island, lying north-west of Tasmania in Bass Strait.
Breeding seabird and shorebird species include Little Penguin, Short-tailed Shearwater, Pacific Gull, Silver Gull, Sooty Oystercatcher, Pied Oystercatcher and Black-faced Cormorant. Reptiles include Tiger Snakes and lizards. A species of mouse is present.
Not to be confused with another Christmas Island, which does have a human population, and therefore some possibilities for genealogy:http://en.wikipedia.org/wiki/Christmas_Island