Bramble Cay Melomys: requiem for a small brown rat
In the official record, it ended quietly. A line in a government notice, tucked beneath more hopeful declarations, marking the passing of Melomys rubicola—the Bramble Cay melomys. After ten thousand years or more of survival on a scrap of reef in the Torres Strait, the last of its kind slipped away unnoticed.
It was never grand. A rat, some would say, with reddish-brown fur and small enough to sit in the palm of a hand. It lived on Bramble Cay: a bare sand-and-coral islet, barely the size of a city block and scarcely higher than a tall man. There it found enough: succulent greens to nibble, turtle eggs when luck allowed, and shelter in the coarse grass.
For most of its story, that was enough. When sailors from HMS Bramble landed in 1845, they found the melomys plentiful; the crew used bows and arrows for sport. Even then it endured. Storms passed, tides rose and fell, and the little rodents, closer to New Guinea than to mainland Australia, carried on.
But the ocean changed. What had once come occasionally—a punishing surge of salt water—became frequent. The sea crept higher each year, then rushed over the island in violent bursts. Vegetation shrank by ninety-seven percent. The cay itself eroded. The melomys—those that were not swept away—starved.
