Indonesia is between the Indian and Pacific oceans.
The Indo-Pacific , sometimes known as the Indo-West Pacific , is a biogeographic region of the Earth 's seas , comprising the tropical waters of the Indian Ocean , the western and central Pacific Ocean , and the seas connecting the two in the general area of Indonesia . Indonesia . Situated between the Indian and Pacific oceans , it is the world 's largest island country , with more than seventeen thousand islands . Lemuria [ lᵻˈmjuːriə ] is the name of a hypothetical `` lost land '' variously located in the Indian and Pacific Oceans .