東北大学大学院生命科学研究科附属浅虫海洋生物学教育研究センター
@asamushi3.bsky.social
Official account of Research Center for Marine Biology, Graduate School of Life Sciences, Tohoku University
HP http://www.biology.tohoku.ac.jp/lab-www/asamushi/
Instagram https://www.instagram.com/rcmb_asamushi/
X https://x.com/asamushi2
HP http://www.biology.tohoku.ac.jp/lab-www/asamushi/
Instagram https://www.instagram.com/rcmb_asamushi/
X https://x.com/asamushi2
Pinned
センターではBlueskyのほかにもさまざまなSNSを通じて日々の業務やトピックについてご紹介しています。是非ご覧いただけますと幸いです！
ツメタガイを捕食するコナガニシです。となりにムシロガイも写っており、図らずも浅虫でよく観察される肉食性の巻貝３種が集合した写真となりました。
A spindle snail (Fusinus ferrugineus) is seen preying on a moon snail. With a nassariid right next to them, this photo captures an unexpected gathering of three carnivorous snail species commonly found in Asamushi.
A spindle snail (Fusinus ferrugineus) is seen preying on a moon snail. With a nassariid right next to them, this photo captures an unexpected gathering of three carnivorous snail species commonly found in Asamushi.
October 9, 2026 at 9:55 AM
ツメタガイを捕食するコナガニシです。となりにムシロガイも写っており、図らずも浅虫でよく観察される肉食性の巻貝３種が集合した写真となりました。
A spindle snail (Fusinus ferrugineus) is seen preying on a moon snail. With a nassariid right next to them, this photo captures an unexpected gathering of three carnivorous snail species commonly found in Asamushi.
A spindle snail (Fusinus ferrugineus) is seen preying on a moon snail. With a nassariid right next to them, this photo captures an unexpected gathering of three carnivorous snail species commonly found in Asamushi.
以前見かけたマボヤです。群体性のホヤに覆われていました。このあと両者がいったいどうなったのか気になるところです。
A sea-squirt (Halocynthia roretzi) was observed. It was covered in a colonial ascidian. I wonder what ever happened to their relationship after that.
A sea-squirt (Halocynthia roretzi) was observed. It was covered in a colonial ascidian. I wonder what ever happened to their relationship after that.
October 8, 2026 at 10:08 AM
以前見かけたマボヤです。群体性のホヤに覆われていました。このあと両者がいったいどうなったのか気になるところです。
A sea-squirt (Halocynthia roretzi) was observed. It was covered in a colonial ascidian. I wonder what ever happened to their relationship after that.
A sea-squirt (Halocynthia roretzi) was observed. It was covered in a colonial ascidian. I wonder what ever happened to their relationship after that.
センター周辺で見られるミドリシャミセンガイです。海底の砂を少し掘ってみると画像のように埋まっている様子を観察することができます。
These are brachiopods (Lingula anatina) that live in a sandy-mud bottom in the water around our center. Digging slightly into the sand reveals how they are buried, as seen in the picture.
These are brachiopods (Lingula anatina) that live in a sandy-mud bottom in the water around our center. Digging slightly into the sand reveals how they are buried, as seen in the picture.
October 7, 2026 at 10:07 AM
センター周辺で見られるミドリシャミセンガイです。海底の砂を少し掘ってみると画像のように埋まっている様子を観察することができます。
These are brachiopods (Lingula anatina) that live in a sandy-mud bottom in the water around our center. Digging slightly into the sand reveals how they are buried, as seen in the picture.
These are brachiopods (Lingula anatina) that live in a sandy-mud bottom in the water around our center. Digging slightly into the sand reveals how they are buried, as seen in the picture.
先日からセンター周辺は荒れた天候が続いています。大きなうねりが桟橋を洗っていました。
Rough sea conditions have continued for the past few days. Waves washed against the pier today.
Rough sea conditions have continued for the past few days. Waves washed against the pier today.
October 2, 2026 at 9:20 AM
先日からセンター周辺は荒れた天候が続いています。大きなうねりが桟橋を洗っていました。
Rough sea conditions have continued for the past few days. Waves washed against the pier today.
Rough sea conditions have continued for the past few days. Waves washed against the pier today.
昨日は実験材料のクラゲの野生個体を探すため、調査船を用いたプランクトン採集が行われました。目的としていたクラゲは採集できませんでしたが、持ち帰ったサンプルにはバラエティ豊かなプランクトンがたくさん含まれていました！
Yesterday, plankton sampling was conducted using our center's research vessel. The target jellyfish was not found, but the sample was full of diverse plankton!
Yesterday, plankton sampling was conducted using our center's research vessel. The target jellyfish was not found, but the sample was full of diverse plankton!
October 1, 2026 at 9:08 AM
昨日は実験材料のクラゲの野生個体を探すため、調査船を用いたプランクトン採集が行われました。目的としていたクラゲは採集できませんでしたが、持ち帰ったサンプルにはバラエティ豊かなプランクトンがたくさん含まれていました！
Yesterday, plankton sampling was conducted using our center's research vessel. The target jellyfish was not found, but the sample was full of diverse plankton!
Yesterday, plankton sampling was conducted using our center's research vessel. The target jellyfish was not found, but the sample was full of diverse plankton!
先日ご紹介したハスノハカシパンの稚ウニの様子です。シャーレの上の砂粒に苦戦しながら一生懸命動き回る様子がとても可愛らしいです！
Here is a look at the juvenile sand dollar I introduced the other day. It is so adorable to watch them actively move and struggle with some sand grains on a petri dish!
Here is a look at the juvenile sand dollar I introduced the other day. It is so adorable to watch them actively move and struggle with some sand grains on a petri dish!
September 30, 2026 at 8:51 AM
先日ご紹介したハスノハカシパンの稚ウニの様子です。シャーレの上の砂粒に苦戦しながら一生懸命動き回る様子がとても可愛らしいです！
Here is a look at the juvenile sand dollar I introduced the other day. It is so adorable to watch them actively move and struggle with some sand grains on a petri dish!
Here is a look at the juvenile sand dollar I introduced the other day. It is so adorable to watch them actively move and struggle with some sand grains on a petri dish!
技術職員さんたちにより本日は大型のコンクリート水槽の掃除が行われました。
The technical staff cleaned the large concrete seawater tank today.
The technical staff cleaned the large concrete seawater tank today.
September 29, 2026 at 8:41 AM
技術職員さんたちにより本日は大型のコンクリート水槽の掃除が行われました。
The technical staff cleaned the large concrete seawater tank today.
The technical staff cleaned the large concrete seawater tank today.
センターで飼育しているハスノハカシパンの幼生が稚ウニに変態しました。受精から20日ほどで稚ウニになったようです。
The larvae of the sand dollars (Scaphechinus mirabilis) being reared at our center have metamorphosed into juvenile sea urchins. It appears they became juvenile sea urchins about 20 days after fertilization.
The larvae of the sand dollars (Scaphechinus mirabilis) being reared at our center have metamorphosed into juvenile sea urchins. It appears they became juvenile sea urchins about 20 days after fertilization.
September 28, 2026 at 8:43 AM
センターで飼育しているハスノハカシパンの幼生が稚ウニに変態しました。受精から20日ほどで稚ウニになったようです。
The larvae of the sand dollars (Scaphechinus mirabilis) being reared at our center have metamorphosed into juvenile sea urchins. It appears they became juvenile sea urchins about 20 days after fertilization.
The larvae of the sand dollars (Scaphechinus mirabilis) being reared at our center have metamorphosed into juvenile sea urchins. It appears they became juvenile sea urchins about 20 days after fertilization.
先日はセンターから大変きれいな夕焼けを眺めることができました。
朝夕は肌寒く、日も短くなってくると秋の訪れを実感させられます。
I enjoyed a beautiful sunset from the Asamushi Research Center the other day. As the days get shorter and the mornings and evenings become cool, it makes us feel the arrival of autumn.
朝夕は肌寒く、日も短くなってくると秋の訪れを実感させられます。
I enjoyed a beautiful sunset from the Asamushi Research Center the other day. As the days get shorter and the mornings and evenings become cool, it makes us feel the arrival of autumn.
September 25, 2026 at 9:35 AM
先日はセンターから大変きれいな夕焼けを眺めることができました。
朝夕は肌寒く、日も短くなってくると秋の訪れを実感させられます。
I enjoyed a beautiful sunset from the Asamushi Research Center the other day. As the days get shorter and the mornings and evenings become cool, it makes us feel the arrival of autumn.
朝夕は肌寒く、日も短くなってくると秋の訪れを実感させられます。
I enjoyed a beautiful sunset from the Asamushi Research Center the other day. As the days get shorter and the mornings and evenings become cool, it makes us feel the arrival of autumn.
先日見かけたスナヒトデです。砂泥底には見事に移動の痕跡が残されていました。
A starfish (Luidia quinaria) spotted in the water near Hadakajima the other day. You could clearly see the traces left behind as it moved across the sandy-mud bottom.
A starfish (Luidia quinaria) spotted in the water near Hadakajima the other day. You could clearly see the traces left behind as it moved across the sandy-mud bottom.
September 24, 2026 at 9:16 AM
先日見かけたスナヒトデです。砂泥底には見事に移動の痕跡が残されていました。
A starfish (Luidia quinaria) spotted in the water near Hadakajima the other day. You could clearly see the traces left behind as it moved across the sandy-mud bottom.
A starfish (Luidia quinaria) spotted in the water near Hadakajima the other day. You could clearly see the traces left behind as it moved across the sandy-mud bottom.
石の裏で体の口側に隙間をつくるイトマキヒトデです。餌が来るのを待っているのかもしれません。
The photo shows a cushion star (Patiria pectinifera) creating a gap on its mouth side under a rock. It might be waiting for food to come.
The photo shows a cushion star (Patiria pectinifera) creating a gap on its mouth side under a rock. It might be waiting for food to come.
September 18, 2026 at 8:36 AM
石の裏で体の口側に隙間をつくるイトマキヒトデです。餌が来るのを待っているのかもしれません。
The photo shows a cushion star (Patiria pectinifera) creating a gap on its mouth side under a rock. It might be waiting for food to come.
The photo shows a cushion star (Patiria pectinifera) creating a gap on its mouth side under a rock. It might be waiting for food to come.
センター周辺の砂泥底で観察されたエボヤです。わずかに露出した礫に老成した立派な3個体が付着していました。
The photo shows ascidians (Styela clava) observed on the sandy-mud bottom around the Asamushi Research Center. Three well-developed, aged individuals were attached to a slightly exposed pebble.
The photo shows ascidians (Styela clava) observed on the sandy-mud bottom around the Asamushi Research Center. Three well-developed, aged individuals were attached to a slightly exposed pebble.
September 17, 2026 at 8:43 AM
センター周辺の砂泥底で観察されたエボヤです。わずかに露出した礫に老成した立派な3個体が付着していました。
The photo shows ascidians (Styela clava) observed on the sandy-mud bottom around the Asamushi Research Center. Three well-developed, aged individuals were attached to a slightly exposed pebble.
The photo shows ascidians (Styela clava) observed on the sandy-mud bottom around the Asamushi Research Center. Three well-developed, aged individuals were attached to a slightly exposed pebble.
現在センターで飼育しているハスノハカシパンの幼生です。受精後1週間ほどで8腕プルテウス幼生まで成長しています。
Here are the larvae of the sand dollar (Scaphechinus mirabilis) being maintained at the Asamushi Research Center. They developed into 8-arm pluteus larvae in approximately one week.
Here are the larvae of the sand dollar (Scaphechinus mirabilis) being maintained at the Asamushi Research Center. They developed into 8-arm pluteus larvae in approximately one week.
September 16, 2026 at 9:09 AM
現在センターで飼育しているハスノハカシパンの幼生です。受精後1週間ほどで8腕プルテウス幼生まで成長しています。
Here are the larvae of the sand dollar (Scaphechinus mirabilis) being maintained at the Asamushi Research Center. They developed into 8-arm pluteus larvae in approximately one week.
Here are the larvae of the sand dollar (Scaphechinus mirabilis) being maintained at the Asamushi Research Center. They developed into 8-arm pluteus larvae in approximately one week.
本日は調査船を用いた海洋観測が行われました。
Today, we conducted oceanographic monitoring using our research vessel.
Today, we conducted oceanographic monitoring using our research vessel.
September 15, 2026 at 6:17 AM
本日は調査船を用いた海洋観測が行われました。
Today, we conducted oceanographic monitoring using our research vessel.
Today, we conducted oceanographic monitoring using our research vessel.
センター周辺で観察されたホタテウミヘビです。顔だけを砂から出して周囲の様子をうかがっていました。
A snake eel spotted near the Asamushi Research Center, with just its face poking out of the sand to check its surroundings.
A snake eel spotted near the Asamushi Research Center, with just its face poking out of the sand to check its surroundings.
September 11, 2026 at 6:08 AM
センター周辺で観察されたホタテウミヘビです。顔だけを砂から出して周囲の様子をうかがっていました。
A snake eel spotted near the Asamushi Research Center, with just its face poking out of the sand to check its surroundings.
A snake eel spotted near the Asamushi Research Center, with just its face poking out of the sand to check its surroundings.
涼しさが増し青森では秋を感じる季節となってきました。先日センター周辺の潮下帯ではイトマキヒトデの放精が確認されました。
With the cooler weather, autumn has arrived here in Aomori. The other day, spawning of the sea star Patiria pectinifera was observed in the waters around the Asamushi Research Center.
With the cooler weather, autumn has arrived here in Aomori. The other day, spawning of the sea star Patiria pectinifera was observed in the waters around the Asamushi Research Center.
September 10, 2026 at 9:02 AM
涼しさが増し青森では秋を感じる季節となってきました。先日センター周辺の潮下帯ではイトマキヒトデの放精が確認されました。
With the cooler weather, autumn has arrived here in Aomori. The other day, spawning of the sea star Patiria pectinifera was observed in the waters around the Asamushi Research Center.
With the cooler weather, autumn has arrived here in Aomori. The other day, spawning of the sea star Patiria pectinifera was observed in the waters around the Asamushi Research Center.
先日野外で見かけたハスノハカシパンの様子です。元気のよい個体は反口側からたくさんの管足を伸ばしています!
This is a sand dollar (Scaphechinus mirabilis) observed in the field the other day. Active individuals extend numerous tube feet from the aboral surface!
This is a sand dollar (Scaphechinus mirabilis) observed in the field the other day. Active individuals extend numerous tube feet from the aboral surface!
September 9, 2026 at 9:16 AM
先日野外で見かけたハスノハカシパンの様子です。元気のよい個体は反口側からたくさんの管足を伸ばしています!
This is a sand dollar (Scaphechinus mirabilis) observed in the field the other day. Active individuals extend numerous tube feet from the aboral surface!
This is a sand dollar (Scaphechinus mirabilis) observed in the field the other day. Active individuals extend numerous tube feet from the aboral surface!
当センターの阿部広和技術専門職員が、このたび日本動物学会第97回大会において感謝状を授与されました！
At the 97th Annual Meeting of the Zoological Society of Japan held in Sapporo from September 3 to 5, Mr. Hirokazu Abe, a technical specialist at our Research Center, received a certificate of appreciation！
www.lifesci.tohoku.ac.jp/date/detail-...
At the 97th Annual Meeting of the Zoological Society of Japan held in Sapporo from September 3 to 5, Mr. Hirokazu Abe, a technical specialist at our Research Center, received a certificate of appreciation！
www.lifesci.tohoku.ac.jp/date/detail-...
September 8, 2026 at 9:06 AM
当センターの阿部広和技術専門職員が、このたび日本動物学会第97回大会において感謝状を授与されました！
At the 97th Annual Meeting of the Zoological Society of Japan held in Sapporo from September 3 to 5, Mr. Hirokazu Abe, a technical specialist at our Research Center, received a certificate of appreciation！
www.lifesci.tohoku.ac.jp/date/detail-...
At the 97th Annual Meeting of the Zoological Society of Japan held in Sapporo from September 3 to 5, Mr. Hirokazu Abe, a technical specialist at our Research Center, received a certificate of appreciation！
www.lifesci.tohoku.ac.jp/date/detail-...
当センターで飼育しているキタサンショウウニです。興味深いことにクワの葉をよく食べ、与えると徐々に集まり摂餌を開始する様子が観察されます。
The photo shows sea urchins (Temnopleurus hardwickii) kept in the seawater tank at our center. Interestingly enough, they seem to like mulberry leaves—when we feed them the leaves, they gradually gather around and start eating.
The photo shows sea urchins (Temnopleurus hardwickii) kept in the seawater tank at our center. Interestingly enough, they seem to like mulberry leaves—when we feed them the leaves, they gradually gather around and start eating.
September 7, 2026 at 8:36 AM
当センターで飼育しているキタサンショウウニです。興味深いことにクワの葉をよく食べ、与えると徐々に集まり摂餌を開始する様子が観察されます。
The photo shows sea urchins (Temnopleurus hardwickii) kept in the seawater tank at our center. Interestingly enough, they seem to like mulberry leaves—when we feed them the leaves, they gradually gather around and start eating.
The photo shows sea urchins (Temnopleurus hardwickii) kept in the seawater tank at our center. Interestingly enough, they seem to like mulberry leaves—when we feed them the leaves, they gradually gather around and start eating.
センター周辺の砂地でよくみられるツメタガイです。大きな軟体部を持っていますが、砂を払うなど、ちょっとした刺激を与えるとすぐに殻に引っ込んでひっくり返ってしまいます。
A moon snail found on sandy bottom near the Asamushi Research Center. When disturbed, such as by brushing off sand, this large-bodied snail rapidly retreats into its shell and rolls onto its back.
A moon snail found on sandy bottom near the Asamushi Research Center. When disturbed, such as by brushing off sand, this large-bodied snail rapidly retreats into its shell and rolls onto its back.
September 4, 2026 at 5:45 AM
センター周辺の砂地でよくみられるツメタガイです。大きな軟体部を持っていますが、砂を払うなど、ちょっとした刺激を与えるとすぐに殻に引っ込んでひっくり返ってしまいます。
A moon snail found on sandy bottom near the Asamushi Research Center. When disturbed, such as by brushing off sand, this large-bodied snail rapidly retreats into its shell and rolls onto its back.
A moon snail found on sandy bottom near the Asamushi Research Center. When disturbed, such as by brushing off sand, this large-bodied snail rapidly retreats into its shell and rolls onto its back.
砂地に生息するハスノハカシパンです。画像の個体をよく観察すると反口側にトクナガヤドリニナという巻貝が寄生しています。
This image shows a sand dollar inhabiting a sandy bottom. A detailed examination of the individual in the image, reveals a parasitic gastropod (Hypermastus tokunagai) attached to its aboral surface.
This image shows a sand dollar inhabiting a sandy bottom. A detailed examination of the individual in the image, reveals a parasitic gastropod (Hypermastus tokunagai) attached to its aboral surface.
September 3, 2026 at 8:04 AM
砂地に生息するハスノハカシパンです。画像の個体をよく観察すると反口側にトクナガヤドリニナという巻貝が寄生しています。
This image shows a sand dollar inhabiting a sandy bottom. A detailed examination of the individual in the image, reveals a parasitic gastropod (Hypermastus tokunagai) attached to its aboral surface.
This image shows a sand dollar inhabiting a sandy bottom. A detailed examination of the individual in the image, reveals a parasitic gastropod (Hypermastus tokunagai) attached to its aboral surface.
先日見かけたイワシの群れです。ツバスに追われて逃げ回っているようでした。
Here’s a school of sardines I spotted recently. They were desperately swimming away, pursued by young yellowtails.
Here’s a school of sardines I spotted recently. They were desperately swimming away, pursued by young yellowtails.
September 2, 2026 at 9:03 AM
先日見かけたイワシの群れです。ツバスに追われて逃げ回っているようでした。
Here’s a school of sardines I spotted recently. They were desperately swimming away, pursued by young yellowtails.
Here’s a school of sardines I spotted recently. They were desperately swimming away, pursued by young yellowtails.
センター近くのアマモ群落の様子です。近くで見ると葉に様々な生物が付着しており、多様な生き物を支えていることが良く分かります。
This is the eelgrass bed near the Asamushi Research Center for Marine Biology. Observing it closely reveals diverse organisms attached to the leaves, demonstrating its role in sustaining a wide variety of marine life.
This is the eelgrass bed near the Asamushi Research Center for Marine Biology. Observing it closely reveals diverse organisms attached to the leaves, demonstrating its role in sustaining a wide variety of marine life.
September 1, 2026 at 9:31 AM
センター近くのアマモ群落の様子です。近くで見ると葉に様々な生物が付着しており、多様な生き物を支えていることが良く分かります。
This is the eelgrass bed near the Asamushi Research Center for Marine Biology. Observing it closely reveals diverse organisms attached to the leaves, demonstrating its role in sustaining a wide variety of marine life.
This is the eelgrass bed near the Asamushi Research Center for Marine Biology. Observing it closely reveals diverse organisms attached to the leaves, demonstrating its role in sustaining a wide variety of marine life.
画像は砂底に隠れるガザミです。近づくと鉗脚を振りかざして威嚇してきます。とても美味しいカニですが、はさむ力が強いためフィールドワークの際には注意が必要です。
Here is a swimming crab partially buried in the sand. Should you approach, it me aggressive raise its chelipeds in a threat display. It boasts a powerful pinch, so take care when doing fieldwork!
Here is a swimming crab partially buried in the sand. Should you approach, it me aggressive raise its chelipeds in a threat display. It boasts a powerful pinch, so take care when doing fieldwork!
August 31, 2026 at 8:52 AM
画像は砂底に隠れるガザミです。近づくと鉗脚を振りかざして威嚇してきます。とても美味しいカニですが、はさむ力が強いためフィールドワークの際には注意が必要です。
Here is a swimming crab partially buried in the sand. Should you approach, it me aggressive raise its chelipeds in a threat display. It boasts a powerful pinch, so take care when doing fieldwork!
Here is a swimming crab partially buried in the sand. Should you approach, it me aggressive raise its chelipeds in a threat display. It boasts a powerful pinch, so take care when doing fieldwork!
今後の発生学の実習で用いるハスノハカシパンの採集が行われました。センターに持ち帰り、早速確認してみたところ、無事に放精放卵を確認することができました。
Sand dollars were collected for use in an upcoming embryology course. After they were brought back to the laboratory, successful spawning and sperm release were confirmed.
Sand dollars were collected for use in an upcoming embryology course. After they were brought back to the laboratory, successful spawning and sperm release were confirmed.
August 28, 2026 at 6:01 AM
今後の発生学の実習で用いるハスノハカシパンの採集が行われました。センターに持ち帰り、早速確認してみたところ、無事に放精放卵を確認することができました。
Sand dollars were collected for use in an upcoming embryology course. After they were brought back to the laboratory, successful spawning and sperm release were confirmed.
Sand dollars were collected for use in an upcoming embryology course. After they were brought back to the laboratory, successful spawning and sperm release were confirmed.