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Abstract. Febiansi D, Rahmayanti F, Kurnia RN, Silmi MA, Dewi AK, Millaty NK, Prasetya TA, Roshitafandi DA, Sartika HW, Trijoko. 2018. Species diversity of gastropods (Cypraeidae and Conidae) at Krakal Beach, Gunungkidul, Yogyakarta, Indonesia. Ocean Life 2: 27-32. Krakal is a beach in Gunungkidul, Yogyakarta, Indonesia which has white sand and coral substrate in the intertidal zone. Cypraeidae and Conidae are families of gastropods found quite varied in the intertidal zone of Krakal Beach. The purpose of this research was to discover the diversity of Cypraeidae and Conidae families in the intertidal zone of Krakal Beach, Gunungkidul, Yogyakarta. The research was conducted on May 24, 2014 and May 25, 2017. The ecological parameters recorded were  26,5oC for temperature in 2014 and  26oC for temperature in 2017 , ±3.35% for salinity in 2014 and ±3,6% for salinity in 2017, 7.7 for pH. in 2014 and 7 for pH in 2017. The samples were collected using purposive sampling method, and specimens were identified by determining the morphological characteristics of the shell. This study found 5 species of Cypraeidae family in the intertidal zone of Krakal Beach, those are Cypraea annulus, Cypraea bouteti, Cypraea moneta, Cypraea caputserpentis and Cypraea lynx. While for family Conidae 5 species were found, those are Conus coronatus, Conus ebraeus, Conus capitaneus, Conus botulinus, and Conus fergusoni.

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Roshitafandi DA, Sartika HW, Dewi AK, Nashrurrokhman M, Ratman N, Trijoko. 2018. Short Communication: Seawater Mollusca (bivalve) diversity at Dullah Laut Beach, Tual City, Southeast Moluccas, Indonesia. Ocean Life 2: 21-26. Indonesia is a country that has high-level of biodiversity supported by diverse types of beaches. Dullah Laut Village is located on one of the small islands in Southeast Moluccas. Dullah Laut Beach is a natural white sandy beach with algae, seagrass, and rocky substrate. Bivalve is part of the Mollusca found mostly on the Dullah Laut Beach. The purpose of this research is to know the diversity of Bivalve class in the intertidal zone of Dullah Laut Beach, Southeast Molucca related with the environmental parameters. This research was conducted in July and August 2017. The environmental parameters recorded at the time of the study were 27oC for temperature, 0,01 mg/L for nitrite, and 0,5 mg/L for ammonia. The method used in this study is purposive sampling method. After data collection was completed, the next steps were documentation, preservation, and identification conducted in the Faculty of Biology, Universitas Gadjah Mada, Indonesia. Based on this research, we found 4 genera of the class Bivalve in Dullah Laut Beach namely Atactodea, Macrocallista, Mactra, and Hippopus.