Superfamily Acteonoidea Nudibranch Photos Status: All Spawning (9) Multiple (8) Period: All 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 Micromelo guamensis 2026-05-31 KAITO UEMURA 1no ne Hydatina zonata 2021-01-31 山下 実里( ザ・ダイブス ) Hamanako Micromelo barbarae 2026-03-07 Mostly_Macro Banya Japonactaeon nipponensis 2026-05-25 天草よかよかダイビング 中野 誠志 Sirato kaisuiyokuzyou Japonactaeon nipponensis 2026-05-25 天草よかよかダイビング 中野 誠志 Sirato kaisuiyokuzyou Pupa strigosa 2026-05-16 Mizu Tate Beach Pupa strigosa 2026-05-21 名谷朋浩 Kajinohama Pupa strigosa 2026-05-21 名谷朋浩 Kajinohama Punctacteon amakusaensis 2026-05-17 天草よかよかダイビング 中野 誠志 Simono kura Japonactaeon sp. 1 2026-05-16 Mizu Tate Beach Hydatina physis 2026-05-13 Sea slug Explorer @徳之島 Senma Dragon Hole Aplustrum amplustre 2026-01-03 KAITO UEMURA Kaminato Hydatina zonata 2025-03-22 KAITO UEMURA Okuridashino irie Micromelo barbarae 2026-05-05 大場健一郎 Wall Cave Pupa strigosa 2026-05-10 名谷朋浩 Wannai Micromelo guamensis 2022-04-30 大場健一郎 Maouno kyuuden Hydatina physis 2026-03-08 KAITO UEMURA Okuridashino irie Micromelo barbarae 2026-03-21 KAITO UEMURA Yaene Japonactaeon sp. 1 2026-05-06 kyoko fujimoto Tate Beach Bullina lineata 2026-05-06 KAITO UEMURA 1.5 banno ne Micromelo barbarae 2026-05-01 大場健一郎 Maouno kyuuden Micromelo guamensis 2026-05-05 KAITO UEMURA 1no ne Japonactaeon nipponensis 2026-03-14 yu Wakayama Hydatina physis 2026-03-01 n.t___kii______ Futou beach Micromelo barbarae 2026-04-25 Sea slug Explorer @徳之島 Seta Coast Pupa strigosa 2026-04-21 名谷朋浩 Gorilla Chop Micromelo guamensis 2026-04-20 名谷朋浩 Gorilla Chop Micromelo barbarae 2026-03-15 近藤 秀生 Batangas channel Aplustrum amplustre 2021-10-20 名谷朋浩 Yaene Micromelo barbarae 2026-03-21 Kohei OKAMOTO Yaene Pupa strigosa 2026-02-10 DS.ウミウシハンターズ 池田雄吾 全部城ヶ島水域のみ投稿 Kajinohama Hydatina zonata 2026-03-11 新井 隆大(DSあらいぐま) Hayakawa Beach Pupa strigosa 2021-07-24 名谷朋浩 Kajinohama Micromelo barbarae 2026-03-04 Shizuka Seki Kuroshima V-Point Hydatina physis 2025-05-28 たけわき Susami Pupa strigosa 2025-03-11 天草よかよかダイビング 中野 誠志 Fukami Hydatina physis 2025-12-07 Hirotyseaslugs Tanabe Hydatina zonata 2026-02-04 オミ@教導潜水漢 Arai Benten Beach Bullina lineata 2024-04-13 Go Kobaton Tsuchikata Micromelo barbarae 2026-01-19 tsuyoshi Ushitsuki Rock Show more (377 remaining) →