Ambon Bay waters consist of two parts, Inner Ambon Bay and Outer Ambon Bay separated by a gap that is narrow and shallow. Ambon Bay has a lot of functionality and USAbility both in transportation, conservation, and tourism. The existence of one of the sites SS. Aquila sinking ship that sank since May 27, 1958, became one of the tourist attraction diving in Ambon Bay. Determination of water pollution index Ambon Bay becomes very important to do as support material and development of sea travel. Determining pollution index is done by direct measurement using the sea water quality parameters Water Quality Checker (DKK TOA WQC Type-24), as well as laboratory analysis to determine the chemical parameters of seawater (pH, TSS, salinity, turbidity, oil, grease). The results showed that the waters of the Bay of Ambon Affairs based on some parameters water quality standard for marine tourism is still included in accordance with the standard criteria by Keputusan Menteri Negara Lingkungan Hidup Nomor: 51 Tahun 2004 on Guidelines for Determination of Water Quality Status.
free text keywords: Indonesia, sea, pollution index, diving, Ambon Bay