This image is a composite created using only marine life encountered off Kume Island in 2025. Off Kume Island Blackwater Dive Schedule (May–August 2026) Last updated on April 10, 2026 Set Arrival Dive Schedule Days / Dives Departure Notes 5A 01 May (Fri) 01–05 May 5 days / 10 dives 06 May (Wed) beginning of the blackwater season 22~24℃ 5B 06 May (Wed) 06–09 May 4 days / 8 dives 10 May (Sun) beginning of the blackwater season 22~24℃ 7A Fully booked 17 July (Fri) Waiting list available 17–21 July 5 days / 10 dives 22 July (Wed) calm season 27~28℃ 7B Fully booked 22 July (Wed) Waiting list available 22–25 July 4 days / 8 dives 26 July (Sun) calm season 27~28℃ 7C Fully booked 26 July (Sun) Waiting list available 26–30 July 5 days / 10 dives 31 July (Fri) calm season 27~28℃ 7D Fully booked 31 July (Fri) Waiting list available 31 July – 03 Aug 4 days / 8 dives 04 Aug (Tue) calm season 27~28℃ 8A Fully booked 04 Aug (Tue) Waiting ...