Mussau Island is the largest island of St Matthias Islands, Papua New Guinea,[1] at 1°25′01″S 149°37′59″E / 1.417°S 149.633°E / -1.417; 149.633.
It is part of the New Ireland Province of Papua New Guinea.
The island is a noted biodiversity hotspot with pristine primeval rainforest covering most of Mussau's hilly landscape.
The island has over 243 endemic plant species as well as at least 47 native butterfly species.
[2] This New Ireland Province geography article is a stub.