The ecoregion includes several island groups lying east of the eastern peninsula of the island of
New Guinea, within
Milne Bay Province, including the
d'Entrecasteaux Islands and
Trobriand Islands archipelagoes, and
Woodlark Island. The largest portion of the ecoregion and the nearest to the New Guinea mainland is made up of three principal islands of the d'Entrecasteaux group:
Goodenough Island,
Fergusson Island, and
Normanby Island. ==Flora==