The St Matthias Islands (also known as the Mussau islands) are a small

archipelago An archipelago ( ), sometimes called an island group or island chain, is a chain, cluster, or collection of islands, or sometimes a sea containing a small number of scattered islands. Examples of archipelagos include: the Indonesian Archi ...

group of islands in the

Bismarck Archipelago The Bismarck Archipelago (, ) is a group of islands off the northeastern coast of New Guinea in the western Pacific Ocean and is part of the Islands Region of Papua New Guinea. Its area is about 50,000 square km. History The first inhabitants o ...

, in northern

Papua New Guinea Papua New Guinea (abbreviated PNG; , ; tpi, Papua Niugini; ho, Papua Niu Gini), officially the Independent State of Papua New Guinea ( tpi, Independen Stet bilong Papua Niugini; ho, Independen Stet bilong Papua Niu Gini), is a country i ...

. They are within

New Ireland Province New Ireland Province, formerly New Mecklenburg (german: Neu-Mecklenburg), and Nova Hibernia, is the northeasternmost province of Papua New Guinea. Physical geography The largest island of the province is New Ireland. Also part of the province a ...

Geography

There are at least 10 islands. The largest and most northerly is

Mussau Mussau Island is the largest island of St Matthias Islands, Papua New Guinea, at . It is currently part of the New Ireland Province of Papua New Guinea. The island is a noted Biodiversity hotspot with pristine primeval Rainforest Rainforest ...

. To the southwest of Mussau are: Eloaua, Emananus, Boliu, Emussau, Ebanalu, Ekaleu, and a few smaller isles. To the east of Mussau are:

Emirau Emirau Island, also called Emira, is an island in the Bismarck Archipelago located at . It is currently part of the New Ireland Province of Papua New Guinea. The local language is a dialect of the Mussau-Emira language. Emira is part of what on ...

, and further east is Tench Island. The islands have been designated as an

Endemic Bird Area An Endemic Bird Area (EBA) is an area of land identified by BirdLife International as being important for habitat-based bird conservation because it contains the habitats of restricted-range bird species (''see below for definition''), which are the ...

Birdlife International BirdLife International is a global partnership of non-governmental organizations that strives to conserve birds and their habitats. BirdLife International's priorities include preventing extinction of bird species, identifying and safeguarding ...

. Archipelagoes of Papua New Guinea Bismarck Archipelago New Ireland Province {{PapuaNewGuinea-island-stub