The Tryne Islands are a group of numerous small Antarctic islands and rocks, about 7 km (4 mi) in extent, forming the western limit of Tryne Bay and Tryne Sound at the north-eastern end of the Vestfold Hills. The islands were mapped by Norwegian cartographers from aerial photographs taken by the Lars Christensen Expedition (1936–37) and named Trynøyane ("snout islands").
A 40 ha site, comprising a small unnamed ice-free island in the north of the group, has been designated an Important Bird Area (IBA) by BirdLife International because it supports a breeding colony of about 13,000 pairs of Adélie penguins, estimated from 2011 satellite imagery.[2]