A sea stack at the southern tip of Jacquemart Island is – with the exception of the country's Antarctic claims – New Zealand's southernmost point.

[citation needed] The following table includes named islands according to Land Information New Zealand.

Cats (Felis catus) and Norway rats (Rattus novegicus) prey on native birds, and much of the vegetation was destroyed by sheep (Ovis aries) and cattle (Bos taurus).

In 2001, four helicopters, under instruction from the New Zealand Department of Conservation (DOC) spread 120 tonnes of rodenticide-laced bait across the island over one month.

The seabirds are southern rockhopper and yellow-eyed penguins, Antipodean, southern royal, light-mantled, black-browed, Campbell and grey-headed albatrosses, northern giant and white-chinned petrels, and the Campbell shag.