シャドーイング練習: Why no aquarium has a great white shark - 動画で英語スピーキングを学ぶ

練習モードを選ぶ

各モードは全画面の練習ルームで開きます。

70 文

文が短すぎたり長すぎる場合は、Editをタップして調整してください。

There are some shark species that seem to do okay in aquariums.

You'll see a lot of nurse sharks, zebra sharks, some reef sharks and sand tiger sharks, but not the great white.

For decades, aquariums have tried to contain the world's largest predatory fish.

Institutions like Marineland, SeaWorld and the Steinhardt Aquarium repeatedly took in white sharks during the 1970s, 80s and 90s, at times drawing huge crowds.

But they never lasted long.

Some needed help swimming.

None of them would eat.

The longest one lasted was just 16 days.

A 1984 report by the Steinhardt Aquarium put it this way.

In most cases, it could be said that all of these captive sharks were merely in the process of dying, with some taking longer than others.

They had constructed an elaborate transport tank with a harness and IV fluids, but still couldn't keep the sharks alive.

It wasn't until 2004 that the Monterey Bay Aquarium proved

that it was possible to keep white sharks for at least six months.

It took a massive effort, and no one's done it since.

Our approach was one of sort of a systematic, logical sequence of things leading up to our success, and it started with designing the tank.

The Monterey Bay Aquarium had a million -gallon egg -shaped tank, 35 feet deep, designed for open -ocean animals like tuna and sharks.

So you need a big tank.

You also need a small shark.

Adult great whites reach 15 feet on average.

The Monterey Bay Aquarium nabbed one in 2004 that was 4 feet 4 inches, less than a year old.

That made it easier to move and easier to keep.

When they're young, they feed on fish.

And as they get older, they transition to feeding more on mammals.

And so we were targeting the age bracket where we were more able to feed their natural diet it.

And once they collected the shark, they didn't take it straight to the aquarium.

Instead, the Monterey Bay team set up a four million gallon pen right there in the ocean.

That way they could monitor the shark and see

if it would feed before they moved it into a transport tank to travel from Southern California, where the sharks were born, up to the aquarium.

Sharks, like all fish, need to have water continually passing through their gills in order to get oxygen.

Most species can open and close their mouths to pump water through, but white sharks and a couple dozen other species don't do that.

To breathe, they have to move forward through the water with their mouths open.

That's why white sharks start to weaken as soon as they're caught in the net.

And that's why they needed a custom built transport tank for mobile life support.

Everything from oxygen sensors and video cameras and lighting and filtration systems

that were needed for the what turned out to roughly be nine to 11 hour transport time.

Aquarium attendance jumped 30 % while the shark was on display.

After six and a half months, they decided to release it because it had killed two other sharks.

Over the next six years, the aquarium displayed five more baby white sharks.

Some they paid fishermen to hand over, some they caught themselves.

Their stays ranged from just 11 days up to five months.

The Monterey Bay Aquarium had succeeded in doing what no one else could.

But it did take a toll on the sharks.

They developed visible sores from bumping into the sides of the tank.

We actually snuck in with photographers

and took pictures of the sharks as they were beginning to trit and fail due to constant scraping against the wall, basically.

As we viewed it, it was a vase of flowers that would be kept for the visitors.

Historically, aquariums kept sharks that lived near the seabed or near reefs.

That makes sense it's easier to recreate those habitats in a tank.

But in recent decades, aquariums have wanted to bring in bigger, more pelagic sharks, those that spend time roaming the open ocean.

They've even been able to exhibit the largest shark in the world, the whale shark, if they have a big enough tank.

But pelagic sharks are used to being able to swim long distances without obstructions, changing directions only as they please.

So the faster moving sharks like the white shark, mako shark, and blue shark, They have trouble with walls when they're put in a tank.

That's what was happening with the Monterey Bay Aquarium's sixth white shark in 2011.

They decided to release it after 55 days and its tracking tag revealed that the shark died shortly after being released.

They're not sure why.

But since then, they haven't tried to bring in another great white shark.

It's a very, very, very resource intensive program

and we felt like we had accomplished our goal of introducing the general public to a live white shark.

It took a huge, carefully planned system to keep a white shark alive.

And even then, the sharks didn't quite fit there.

We can't seem to stop trying though.

Earlier this year, an 11 and a half foot great white shark was taken to an aquarium in Okinawa,

Japan, after getting caught in a fisherman's net.

It was the only adult white shark ever to be put on display.

And within three days, it was dead.

I wanted to show you a great resource online called the Biodiversity Heritage Library.

It's the product of a couple dozen museums and libraries, all agreeing to scan millions of pages from books related to biodiversity.

They've got a bunch of great albums on Flickr, including one that's all about sharks.

Some of these go back to the 16th and 17th centuries, back when naturalists used to call sharks see dogs,

which is funny because as we now know, sharks were roaming the oceans for about 300 million years before the first mammals showed up.

アプリをダウンロード

流暢に話すために必要なすべて

AI発音採点文ごとに採点

IPA練習すべての音をマスター

単語学習自分の単語帳を作る

単語ゲーム遊びながら覚える

QRをスキャン

Download on theApp Store Get it onGoogle Play

同じチャンネル

FOR YOU

このレッスンの語彙とスピーキングのポイント

このスピーキングレッスンは、動画「Why no aquarium has a great white shark」を教材にしています。繰り返し出てくる語は次のとおりです：shark, aquarium, tank, Monterey, Bay。この動画には、シャドーイング用の文が27文、単語が989語あります。音声の長さは5:49です。話す速さは1分あたり約170語で、日常会話に近い自然なペースです。英語の頻出3,000語に含まれる単語は76%だけなので、語彙は難しめです。

この動画の重要語彙

動画に出てくる覚えておきたい単語15語を、発音と意味つきで紹介します。

単語	発音	意味
aquarium 名詞	/əˈkwɛɹ.i.jəm/	金魚鉢, 養魚鉢
resource 名詞	/ɹɪˈzɔːs/	資源, 資産
oxygen 名詞	/ˈɑksɪd͡ʒən/	酸素
swim 動詞	/swɪm/	泳ぐ
reef 名詞	/ɹiːf/	礁, 暗礁
gallon 名詞	/ˈɡælən/	ガロン
carefully 副詞	/ˈkɛɹf(ə)li/	じっくり, 慎重に
transition 名詞	/tɹænˈzɪʃ.ən/	遷移, 推移
sand 名詞	/sænd/	砂
custom 名詞	/ˈkʌstəm/	習慣, 風俗
reveal 動詞	/ɹɪˈviːl/	現す, 表す
flower 名詞	/ˈfloʊɚ/	花
institution 名詞	/ˌɪn.stɪˈtʃuː.ʃən/	制度
nurse 名詞	/nɝs/	看護師, 看護士
visible 形容詞	/ˈvɪzɪb(ə)l/	見える, 目に見える

動画に出てくる句動詞

単語	意味
hand over 動詞	引き渡す, 手渡す
show up 動詞	現れる

この動画の文法

話し手がよく使っている文型を、動画の実際の表現とともに紹介します。

文型	動画での表現
受動態 be + 過去分詞 — 誰がするかより、何が起きるかに焦点を当てる	could be said · were born · were needed
現在完了形 have/has + 過去分詞 — 過去の出来事が今も関係している	have tried · have wanted · They've even been

注意したい発音

話し手はthey're, didn't, they'veなど、短縮形や弱形を14回使っています。聞こえたとおりの短い形で発音しましょう。

「th」の音: sixth /sɪksθ/, breathe /bɹiːð/
「sh」と「zh」の音: shortly /ˈʃɔɹtli/, transition /tɹænˈzɪʃ.ən/, institution /ˌɪn.stɪˈtʃuː.ʃən/, accomplish /əˈkɑm.plɪʃ/, obstruction /əbˈstɹʌk.ʃən/
長い単語（アクセントの位置に注意）: aquarium /əˈkwɛɹ.i.jəm/, institution /ˌɪn.stɪˈtʃuː.ʃən/, photographer /fəˈtɑ.ɡɹə.fɚ/, repeatedly /ɹɪˈpiːtɪdli/, elaborate /ɪˈlæb.ə.ɹeɪt/

日本語話者が苦手な音：

/r/ と /l/ の区別 — /l/ は舌先を歯茎につけ、/r/ はどこにもつけない: shortly /ˈʃɔɹtli/, carefully /ˈkɛɹf(ə)li/, reveal /ɹɪˈviːl/, roughly /ˈɹʌf.li/, repeatedly /ɹɪˈpiːtɪdli/
/v/ — /b/ にならないように、上の歯を下唇に当てる: reveal /ɹɪˈviːl/, visible /ˈvɪzɪb(ə)l/, intensive /ɪnˈtɛnsɪv/, visitor /ˈvɪzɪtɚ/, captive /ˈkæptɪv/
/f/ — 「フ」ではなく、上の歯と下唇で出す: reef /ɹiːf/, carefully /ˈkɛɹf(ə)li/, flower /ˈfloʊɚ/, roughly /ˈɹʌf.li/, photographer /fəˈtɑ.ɡɹə.fɚ/

この動画での練習方法

まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
まず0.75倍速で一文ずつシャドーイングし、慣れてきたら通常の速度に戻します。
自分の声を録音して元の音声と比べます。aquarium, resource, oxygenなどの単語に特に注意しましょう。

シャドーイングとは？英語上達に効果的な理由

シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。

シャドーイングのやり方: ステップ別の完全ガイドを読む →

シャドーイング練習: Why no aquarium has a great white shark - 動画で英語スピーキングを学ぶ

練習モードを選ぶ

アプリをダウンロード

Why financial literacy education in the US sucks

How cruise ships got so big

Inside the secret race to build artificial intelligence | The Gray Area

Five things you need to know for the 2026 midterms | America, Actually

How to be less neurotic | The Gray Area

We’re already using AI more than we realize

The Ticketmaster monopoly is over, now what?

The biggest peach myth in America

How to solve problems like a designer

The origin of the '80s aesthetic

Why “Buy one, get one free” isn’t a great deal

How F1 drivers survive their own cars

White, pink, and brown noise, explained #shorts

Why 350°F is the magic number for baking

How did pink become a girly color?

Why China's population is shrinking

The real reason Boeing's new plane crashed twice

Why AI art struggles with hands

Why is everything getting so expensive?

Proof of evolution that you can find on your body

Why The Entire Ocean Is Terrified of Sperm Whales

Hope for the White Rhino: Scientists Create 38 Embryos in Conservation Breakthrough | 4K | N18G

Testing if Sharks Can Smell a Drop of Blood

Nature Aquarium Gallery Tour | Spring 2026

How Did Ancient Humans Survive the Deadliest Predators on Earth?

I Bought the BIGGEST Fish in the Store!

Every Sushi Explained

Simulating an Ocean for 100 Days

Why Don’t We Eat Shark Meat?

The Insane Biology of: The Octopus

Why Haven't We Domesticated Monkeys?

What If Megalodon Fought a 13-Meter Titanoboa in the Swamp?