Yuuki Niimi (@yniimi808) header
Yuuki Niimi (@yniimi808) profile picture

Yuuki Niimi

@yniimi808

(he/him) PhD Candidate Environmental Life Science @BIOSstation @ASUGlobalFuture 🦐. Interested in #Zooplankton #Nekton #Pelagic #Polar and #Deepsea 🦑🐟🇺🇸🇯🇵

Joined July 2019
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Photo by Yuuki Niimi (@yniimi808)Photo by Yuuki Niimi (@yniimi808)Photo by Yuuki Niimi (@yniimi808)Photo by Yuuki Niimi (@yniimi808)Photo by Yuuki Niimi (@yniimi808)Photo by Yuuki Niimi (@yniimi808)Photo by Yuuki Niimi (@yniimi808)Photo by Yuuki Niimi (@yniimi808)Photo by Yuuki Niimi (@yniimi808)Photo by Yuuki Niimi (@yniimi808)
You could see the heart pumping in this Clio pyramidata pteropod 🐚 #PteropodThursday #Zooplankton
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Gug (@GugUnderwater) profile picture
Gug@GugUnderwaterJul 6
A collage of subjects from one Aliens night in Okinawa last year. Since I’m returning soon, I’m looking back through my shots to prep & inspiration, and these were the B-listers that haven’t been seen from my first night last time. #larvalfish #deepseacreatures #blackwaterdiving
Image from Gug (@GugUnderwater)
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Zootaxa updates (@Zootaxa) profile picture
Zootaxa updates@ZootaxaJun 10
A new species of Rhinochimaera Garman 1901 (#Holocephali: #Chimaeriformes: #Rhinochimaeridae) from the Eastern Pacific Ocean #taxonomy #newspecies doi.org/10.11646/zootaxa.582…
Image from Zootaxa updates (@Zootaxa)
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WoRMS (@WRMarineSpecies) profile picture
WoRMS@WRMarineSpeciesMar 19
(9/10) Poseidon’s Squid was found in the stomach of a sperm whale. marinespecies.org/worms-top-… @cefafalopodo @IEOoceanografia @IEO_GIJON @ICMCSIC #toptenmarinespecies #taxonomistappreciationday #OceanDecade #GenOcean
Image from WoRMS (@WRMarineSpecies)
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なんと、@EcologicalRes で発表した論文が #ESJ73 で #生態学会 論文賞 を受賞しました! 特典としてオープンアクセスになりましたので、ここからタダで読めます: doi.org/10.1111/1440-1703.12…
Image from C. Chen @ Jamsteeeec (@squamiferum)
C. Chen @ Jamsteeeec (@squamiferum) profile pictureC. Chen @ Jamsteeeec@squamiferum27 Sep 2024
[新作] 伊豆小笠原弧・木曜海山熱水域を30年ぶりに調査し、熱水活動の変化と化学合成生物群集の組成を明らかにした論文が @EcologicalRes に掲載! 元々3種類しか知られていなかった熱水群集の動物は18種に。 論文リンクはこちら: doi.org/10.1111/1440-1703.12… @PMethou @esjoffice
Image from C. Chen @ Jamsteeeec (@squamiferum)
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Finally getting to see live Antarctic krill (E. superba)! (My Ph.D. bucket list ✅) #Antarctica #Krill
Image from Yuuki Niimi (@yniimi808)
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#Zooplankton
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Schmidt Ocean (@SchmidtOcean) profile picture
Schmidt Ocean@SchmidtOceanJan 16
Float like a glass squid. What might it feel like to reach a state where your body’s density perfectly matches your surroundings? Their buoyant bodies are filled w/ ammonium chloride, which is lighter than seawater & helps them conserve energy. 1,729 m -#ArgentinianDeepSeeps
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Going to set sail soon 🚢
Image from Yuuki Niimi (@yniimi808)
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Spotted the RRS Sit David Attenborough
Image from Yuuki Niimi (@yniimi808)
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Schmidt Ocean (@SchmidtOcean) profile picture
Schmidt Ocean@SchmidtOceanJan 6
Benthic ctenophores clinging to tunicates along submarine canyon wall ~1.75 miles deep, during #ArgentinianDeepSeeps. Platyctenida have colloblasts, or sticky cells that release a mucus-like glue when they unspool extra-long tentacles into the water column, fishing for next meal.
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Schmidt Ocean (@SchmidtOcean) profile picture
Schmidt Ocean@SchmidtOceanJan 7
Sea squirts & squid! ROV pilots filmed these salps and spectacular squid during the #SouthSandwichIslands expedition with @oceancensus in early 2025. Salps, also known as sea squirts, are ubiquitous throughout the Ocean, and abundant in the Southern Ocean.
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ゆすら (@yusura0846) profile picture
ゆすら@yusura0846Jan 1
今年もかわいいウミウシたちの飼育がんばります👍✨
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あけましておめでとうございます。 午年にちなんでバテイクラゲ。馬蹄に見えますか。ちなみに学名もHippopodius hippopus（hippo-馬の、-podius脚をした）で、うまうまです。 ◆リニューアル工事に伴う臨時休館◆ 期間：令和7年11月1日(土)～令和8年3月31日(火) kamo-kurage.jp/jyuyo/post-ku…
Image from 東北エプソンアクアリウムかもすい（鶴岡市立加茂水族館） (@JELLYFISHAQ)
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【岩に広がる、3000年の命】 チリ・アタカマ砂漠に生えるヤレータ。苔のように見えるが、正体は枝葉が極端に密集した高山植物。岩のように硬く、人が乗れるほど。そして寿命は3,000年以上。成長を急がないことが、最強の生存戦略なのかも。
Nature is Amazing ☘️ (@AMAZlNGNATURE) profile pictureNature is Amazing ☘️
@AMAZlNGNATURE13 Dec 2025
In the Atacama Desert in Chile, there's 3,000-year-old, densely packed shrub called llareta. It looks like moss covering rocks, but it's actually a cluster of branches and leaves that is so hard you can stand on it.
Image from Nature is Amazing ☘️ (@AMAZlNGNATURE)
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Like a tiny heart beating in time, this deep-sea jellyfish — Periphylla — pulses through the Ocean’s midwater. ROV pilots filmed this luminescent beauty at 920m along Argentina’s continental shelf, off the coast of Buenos Aires #ArgentinianDeepSeeps
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Good news from Antarctica: the 2025 ozone hole is the 5th smallest since 1992, breaking up nearly 3 weeks earlier than average. Scientists say it’s shrinking because ozone-depleting chemicals are declining, thanks to the Montreal Protocol—proof global action works. 🌍❄️ noaa.gov/news-release/noaa-n…
NOAA, NASA: 2025 ozone hole is 5th smallest since 1992

NOAA, NASA: 2025 ozone hole is 5th smallest since 1992

Scientists with NOAA and NASA have ranked this year’s ozone hole over the Antarctic as the fifth smallest since 1992 — the year that the Montreal Protocol, a landmark international agreement to phase...

noaa.gov
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#WildlifeWednesday: During our NA174 expedition to explore the deep sea of the #MarshallIslands, our Corps of Exploration saw this #cuskeel! Spotted at over 2,700 meters deep, our ROV pilots and video engineers enjoyed working together to get this critter on camera.
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Thermal vents with endemic sponges, amphipod and ostracod crustaceans, freshwater snails, annelid and turbellarian worms, and 3 endemic fish families, Abyssocottidae, Comephoridae, Cottocomephoridae.
Image from James Albert 🐟 🇺🇦 (@JamesAl0410008)
Brilliant Maps (@BrilliantMaps) profile pictureBrilliant Maps
@BrilliantMaps13 Dec 2025
Lake Baikal is the deepest lake in the world and contains more fresh water than all 5 Great Lakes combined. What do you think is down there? brilliantmaps.com/lake-baika…
Image from Brilliant Maps (@BrilliantMaps)
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私の写真は全て本物ですのでご安心ください！ 信頼できる情報源を確保して、そこから情報を得る事でストレスが軽減されます！ こちらはズワイガニの赤ちゃん（本物）です。
Image from 眼遊 GANYU (@ganyujapan)
マルキン (@ma_ru_kin) profile pictureマルキン@ma_ru_kin13 Dec 2025
ほんと、「この絵、AIじゃないか？」と疑ってしまうようになった時間と、「このニュース、デマじゃないか？」と疑わなきゃいけなくなった時間ほど無駄なものはないなと思う。
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Gug (@GugUnderwater) profile picture
Gug@GugUnderwater14 Dec 2025
I presume this is a type of Myctophidae lanternfish, but I’m not 100% sure. TL ~2.5cm Shot offshore from Palm Beach, FL in Feb2025 #lanternfish #myctophidae #deepseafish #fishlarvae #larvalfish #deepseacreatures #blackwater #blackwaterdiving #blackwaterphotography #gug #chrisgug
Image from Gug (@GugUnderwater)
Image from Gug (@GugUnderwater)
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