{"id":2181,"date":"2021-04-21T11:51:21","date_gmt":"2021-04-21T04:51:21","guid":{"rendered":"https:\/\/bluejapan.org\/fr\/?page_id=2181"},"modified":"2021-05-31T14:23:38","modified_gmt":"2021-05-31T07:23:38","slug":"spawning-aggregations","status":"publish","type":"page","link":"https:\/\/bluejapan.org\/fr\/highlights\/marine-life\/spawning-aggregations\/","title":{"rendered":"Spawning & Aggregations"},"content":{"rendered":"\t\t
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Spawning Events & Aggregations<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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T\u014cHOKU <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Large aggregations of bigfin reef squid<\/strong> (Sepioteuthis lessoniana<\/em>), an iconic Kuroshio\/Tsushima current species, are often observed between the months of June and October in the Oga Peninsula<\/strong> (Akita Pref.) and around Sado Island<\/strong> (Niigata Pref.).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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KANT\u014c <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Japanese flying squid <\/strong>(Todarodes pacificus<\/em>) spawning events<\/strong> can be observed in May on Miyake-jima<\/strong> in the Izu Islands, as the squid brought by the Kuroshio current congregate and spawn in the area.
The squids deposit long white tubes full of eggs in clusters on tree branches placed there by dive operators, at about 14-16m depth, on shore dive from Okubohama beach.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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CH\u016aBU <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Bigfin reef squid<\/strong> (Sepioteuthis lessoniana<\/em>) spawning events can be observed seasonally, especially in the Futo<\/strong> dive site area, on the east coast of the Izu Penisula<\/strong>, between June to August.\u00a0
On the Sea of Japan side, Toyama Prefecture’s<\/strong> Namerikawa<\/strong> area is famous for its aggregations of bioluminescent<\/strong> firefly squid<\/strong> (Watasenia scintillans<\/em>) which come to lay eggs in shallower waters, and scintillate like underwater fireflies…<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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SHIKOKU<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Akehama<\/strong> (Ehime Prefecture) and Kashiwa-jima<\/strong> (K\u014dchi Pref.) also offer the chance to observe large schools of migratory fish as well as bigfin reef<\/strong> squid <\/strong>(Sepioteuthis lessoniana<\/em>) spawning<\/strong> events<\/strong> in the summer months.<\/p>

Kan-no-ura<\/strong>, on K\u014dchi Prefecture\u2019s Pacific coast, offers divers one of Japan\u2019s only chance to witness whitespotted bambooshark <\/strong>(Chiloscyllium plagiosum<\/em>) spawning events,<\/strong> between the months of May and July.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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KY\u016aSH\u016a<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The are many seasonal squid spawning<\/strong> events around Ky\u016bsh\u016b, including bigfin reef squid <\/strong>(Sepioteuthis lessoniana<\/em>) in the spring months, especially on Miyazaki Prefecture<\/strong> dive sites.

Another interesting phenomenon is the “underwater aurora borealis<\/strong>\u201d, formed by a large mass of bioluminescent algae. This rather unique underwater phenomenon, visible near I\u014djima<\/strong> in Ky\u016bsh\u016b\u2019s Satsunan islands, (Kagoshima Pref.), is best viewed in autumn, when the visibility is good and a powerful Kuroshio warm current brings the right nutrients and conditions
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OKINAWA<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Broadclub cuttlefish<\/strong> (Sepia latimanus<\/em>) are commonly spotted on all reefs of the Okinawa region, but they\u2019re especially common between winter and spring on Ishigaki island<\/strong> where, in early March, impressive mating then spawning events take place on the west coast of the island.<\/p>

Iriomote<\/strong> island<\/strong> is famous for its coral spawning events, that very lucky divers can observe on night dives from May to September, roughly a few day after the full moon.<\/p>

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Other marine life highlights<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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