The Lowendal Islands comprise an archipelago, with a total area of about 160 ha of land on the Pilbara coast of Western Australia.

The inshore waters of the archipelago support coral reefs and beds of seagrass and seaweed.

Varanus Island houses a gas separation plant, oil storage tanks, and a pipeline for loading offshore tankers.

[2] The archipelago has been identified by BirdLife International as an Important Bird Area (IBA) because it regularly supports over 1% of the world's population of crested and bridled terns.

[3] Other seabirds recorded as having bred on the islands include wedge-tailed shearwaters, pied cormorants, roseate, lesser crested and Caspian terns, and silver gulls.