Japan Agency for Marine-Earth Science and Technology (JAMSTEC) has been disseminated information of data and samples obtained by JAMSTEC’s research vessels and submersibles via some databases. The core database is the Data and Sample Research System for Whole Cruise Information (DARWIN, http://www.godac.jamstec.go.jp/darwin/e). DARWIN provides information of more than 2000 cruises and 6500 dives, and its related observation data and geological sample. Each cruise or dive information page of DARWIN has links to related contents such as biological sample, deep-sea image, cruise report and data book provided by another databases. In this poster, we will introduce some examples of efforts to improve the reusability of data and sample described above. - Assignment of Digital Object Identifier (DOI): DOIs have been assigned to more than 2000 research cruises information from the early 1980s onward to promote data citation. A granularity of DOI is a research cruise information page defined as a cruise ID at this time. - Specification of Data Policy: DARWIN has been treated data and samples based on only JAMSTEC data policy until FY2018’s research cruises. Currently, the applicable policy is dependent on type of cruise because the cooperative research cruises have been started since FY2019. DARWIN has been updated to display of an applicable policy on each information page clearly. The function is also available to add to another policy in the future. - Data Rescue: A cruise report is a prompt report that includes the purpose of the cruise, information about what kind of observation was done, how it was done and the results. Cruise reports for past research cruises have been found when moving laboratory and submitted to the Data Management Group. The reports have been scanned and saved as individual PDF to store for long-term and prepare for publication. A part of them with Principle Investigators’ consent have been disseminated step by step.