马鲁古海位于太平洋西部印度尼西亚水域，南接班达海、北临西里伯斯海，有不少潜水地点和丰富的珊瑚蕴藏量。马鲁古海东北端有哈马黑拉岛，中部有布鲁岛和斯兰岛，西面有苏拉威西岛，北端有塔劳群岛。

The Molucca Sea (Indonesian: Laut Maluku) is located in the western Pacific Ocean, around the vicinity of Indonesia, specifically bordered by the Indonesian Islands of Celebes to the west, Halmahera to the east, and the Sula islands to the south. The Molucca Sea has a total surface area of 77,000 square miles (200,000 square km). The Molucca Sea is rich in coral and has many diving sites due to the deepness of its waters. The deepness of the water explains the reasoning behind dividing the sea into three zones, which functions to transport water from the Pacific Ocean to the shallower seas surrounding it. The deepest hollow in the Molucca Sea is the 15,780-foot (4,810-meter) Batjan (Indonesian: Bacan) basin. This region is known for its periodic experiences of earthquakes, which stems from the sea itself being a micro plate, in which the Molucca Sea is being subducted in two opposite directions: one in the direction of the Eurasian Plate to the west and the other in the direction of the Philippines Sea plate to the east.