Suitability of Tourism Zone Based on Oceanographic Characteristics and Coastal Ecosystems in Sendang Biru Waters and Sempu Island, Malang Regency

Sendang Biru Tourism Beach and Sempu Island are tourism zones based on East Java Provincial Regulation No. 1 of 2018, which are part of the Sempu Strait, Malang Regency. Tourism activities depend on the quality of natural resources as the main tourism commodity. Activities that do not match or exceed the area's carrying capacity will also pressure coastal and water resources. This study aimed to determine the suitability of oceanographic and ecosystem characters in tourism zones as parameters for suitability. This study collects secondary and primary data obtained in January 2021, and the method of analysis uses the overlapping technique of physical and biological parameters. The study results show that these waters have a sloping - steep topography with tidal types is mixed tide prevailing semidiurnal, and a current type with a slow - medium category and conditions of temperature, salinity, and pH are still suitable for aquatic ecosystem life. The tourism zone of Sendang Biru Beach and Sempu Island has an oceanographic character that supports coastal tourism activities and ecosystem life, and aquatic biota. However, the existing ecosystem conditions less support coastal tourism activities in these waters. Based on the analysis, it appears that some coastal areas are suitable and very suitable for coastal tourism activities, and the ecotourism concept is recommended for coastal tourism activities.