Shadowing Practice: Unit 12 Sea Caves - Learn English Speaking with Video
Creating lesson...
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Yeah, let's go for it.
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I actually went to New Zealand to study the other side of the island.
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But to satisfy my curiosity, I started exploring this coastline.
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And that turned out to be the day that I actually discovered the longest sea cave in the world.
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To survey the cave, geologist Nicholas Barth and his team paddled their canoes through the cave's tunnels.
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They discovered the Matainaka Cave is around 1.5 kilometers long,
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70% longer than any other sea cave in the world.
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This cave system on the Otago coast contains six of the ten longest sea caves in the world.
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Exploring sea caves is a very difficult task.
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Some parts of the cave are extremely narrow.
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Others are filled with water right up to the ceiling.
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The team must swim underwater to find their way out to the next section of the cave.
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In this part of the cave, the team found some creatures called isopods.
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In larger rooms, they found some impressive rock formations.
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These formations carry a record of climate change over time.
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It's one more piece of the global climate puzzle.
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The team is also studying the cave for evidence of past earthquakes and tsunamis.
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Such data helps geologists understand the area's risk for earthquakes and tsunamis in the future.
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The team also mapped the cave using both traditional 2D cave surveys and also newer three-dimensional surveying tools.
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With these 3D tools, the geologists can get better data about the shape and structure of the caves.
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Barth's study of Matainaka Cave has also shown
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that it is around 80,000 years old and getting about 2 centimeters deeper each year.
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But there is still a lot of work for these geologists to do, and future studies will hopefully reveal even more about this incredible place.
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Vocabulary and speaking notes for this lesson
This B2 speaking lesson is built on the video “Unit 12 Sea Caves”. The speaker keeps coming back to these words: cave, geologist, sea. This video has 23 sentences and 297 words to shadow. The speech runs for 2:47. The speaker talks slowly, about 106 words per minute, so there is time to copy every sound. Only 77% of the words are among the 3,000 most common in English, so the vocabulary is demanding.
Key vocabulary in this video
The 14 most advanced words in the video, with pronunciation and meaning:
| Word | Pronunciation | Meaning |
|---|---|---|
| geologist noun | /d͡ʒiˈɑːlədʒɪst/ | A person whose occupation specializes in the science of geology, especially at a professional or academic level. |
| tsunami noun | /(t)suːˈnɑːmi/ | A very large and destructive wave, generally caused by a tremendous disturbance in the ocean, such as an undersea earthquake or volcanic eruption; often a… |
| earthquake noun | /ˈɝθkweɪk/ | A shaking of the ground, caused by volcanic activity or movement around geologic faults. |
| centimeter noun | (Canadian spelling, alternative) Alternative form of centimetre. | |
| isopod noun | /ˈaɪ.səˌpɒd/ | Any of very many crustaceans, of the order Isopoda, that have a flattened body and no carapace. |
| paddle noun | /ˈpædl̩/ | A single-bladed version is typically used on canoes and some other small boats. |
| canoe noun | /kəˈnuː/ | A small long and narrow boat, propelled by one or more people (depending on the size of canoe), using single-bladed paddles. The paddlers face in the direction… |
| coastline noun | The shape, outline, or boundary of a coast. (The term coastline is generally used to describe the approximate boundaries at relatively large spatial scales.) | |
| underwater adjective | /ʌndɚˈwɔtəɹ/ | Beneath the surface of the water; of or pertaining to the region beneath the water surface. |
| puzzle noun | /ˈpʌzəl/ | The state of feeling confused or mystified because one cannot understand a complicated matter, a problem, etc.; bewilderment, confusion; (countable) often in… |
| curiosity noun | /ˌkjʊɹ.iˈɑ.sə.ti/ | Inquisitiveness; the tendency to ask and learn about things by asking questions, investigating, or exploring. |
| satisfy verb | /ˈsætɪsfaɪ/ | To be enough (for) |
| dimensional adjective | /daɪˈmɛn.ʃə.nəl/ | Of or pertaining to dimensions. |
| ceiling noun | /ˈsilɪŋ/ | The overhead closure of a room. |
Pronunciation to watch
- Long words — get the stress right: geologist /d͡ʒiˈɑːlədʒɪst/, underwater /ʌndɚˈwɔtəɹ/, curiosity /ˌkjʊɹ.iˈɑ.sə.ti/, dimensional /daɪˈmɛn.ʃə.nəl/
How to practise with this video
- Listen to the whole video once without speaking and note the words you do not know.
- Shadow it sentence by sentence at normal speed, repeating each one until your rhythm matches the speaker.
- Record yourself and compare with the original, paying attention to words like geologist, tsunami, earthquake.
What is the Shadowing Technique?
Shadowing is a science-backed language learning technique originally developed for professional interpreter training and popularized by polyglot Dr. Alexander Arguelles. The method is simple but powerful: you listen to native English audio and immediately repeat it out loud — like a shadow following the speaker with just a 1–2 second delay. Unlike passive listening or grammar drills, shadowing forces your brain and mouth muscles to simultaneously process and reproduce real speech patterns. Research shows it significantly improves pronunciation accuracy, intonation, rhythm, connected speech, listening comprehension, and speaking fluency — making it one of the most effective methods for IELTS Speaking preparation and real-world English communication.