We are a small research group under the Department of Marine Science, Diponegoro University, Indonesia, focusing on coral reefs diversity and environment dynamics. Our team is currently working on coral algal-symbiont identification, coral response to stress and symbiont dynamics. We are also interested in the unique relationships of corals and related ecosystem as well as coral reefs dynamics in the Nothern Sea of Java, mainly Karimunjawa Archipelago and Pulau Panjang, Jepara.