Prática de Shadowing: All About Jellyfish - Aprenda a falar inglês com vídeo
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Today it's time to learn all about jellyfish.
Hoje é hora de aprender tudo sobre águas-vivas.
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Despite their name, it's important to know that jellyfish are not fish at all.
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In fact, to avoid confusion, they are sometimes called sea jellies, or even just jellies.
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Characteristics of Jellyfish Jellyfish are invertebrates, which means they don't have bones.
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They also have no brain, no heart or other organs like lungs or gills.
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Jellyfish obtain the oxygen they need through a process called diffusion, whereby they absorb oxygen directly through their thin body walls from the surrounding water,
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allowing them to survive without specialised respiratory organs.
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Made up mostly of water, jellyfish are characterised by their gelatinous, umbrella -shaped bells and trailing tentacles.
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Jellyfish are free swimming, which means they don't really have a permanent home.
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They often drift with ocean currents, travelling through large stretches of the ocean, seas and bays.
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Jellyfish play an important role in the ocean.
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They function both as predators and prey.
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They feed on small fish, plankton and even other jellyfish, using their tentacles to ensnare and immobilise their prey with toxins.
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At the same time, they are an essential food source for various larger species, such as turtles and certain fishes.
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The main part of a jellyfish is the bell, which looks like an umbrella.
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This bell moves by pulsating, pushing water from underneath to help the jellyfish swim or float.
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The surface of the bell can be smooth or have frilly edges depending on the type of jellyfish,
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and it holds their basic digestive and nervous systems.
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Hanging from the bell are the jellyfish's tentacles, which they use to defend themselves and catch food.
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These tentacles have thousands of tiny stinging cells called nematocysts.
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Each cell has a small dart that can shoot out and deliver venom, which paralyzes or kills small sea creatures.
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Jellyfish can stretch out or pull in their tentacles when they need to.
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Below the bell are the aural arms, which are thicker and look a bit like the tentacles, but have a different job.
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They help move the food caught by the tentacles to the jellyfish's mouth.
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Types of Jellyfish Jellyfish are found in every ocean in the world
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and they come in a variety of shapes sizes and colors.
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Moon jellyfish are one of the most common and recognizable jellyfish species.
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The moon jellyfish is known for its translucent saucer -shaped bell which can be up to 40 centimeters in diameter.
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These jellyfish typically inhabit temperate and tropical oceans around the world and are often seen in large numbers.
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Their The diet mainly consists of plankton and small fish.
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The lion's mane jellyfish holds the title for the largest jellyfish.
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The lion's mane can have a bell diameter of over 2 metres and tentacles that extend up to 30 metres or more.
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It is found in the cold waters of the Arctic, Northern Atlantic and North Pacific Oceans.
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The tentacles are grouped in eight clusters, each cluster containing up to 150 tentacles, lined with nematocysts to capture prey.
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Known for being one of the most venomous marine creatures,
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the box jellyfish has a cube -shaped bell and can grow up to 20 centimetres along each side.
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Its tentacles, which can reach up to three metres in length, are covered with potent venom that can be fatal to humans.
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Box jellyfish are primarily found in the waters of the Pacific and Indian Oceans, particularly around northern Australia and throughout Southeast Asia.
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Cannonball jellyfish are named for their round, cannonball -like shape.
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This jellyfish is common in the coastal waters of the southeastern
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United States and into the Caribbean.
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The bell of the cannonball jellyfish can reach up to 25 centimetres in diameter, and while its sting is not generally harmful to humans,
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it can stun small fish.
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These are just a few examples of the diverse array of jellyfish species found in oceans around the world.
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Jellyfish Life Cycle One super interesting thing about jellyfish is their life cycles, which include several unique stages.
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The jellyfish life cycle starts when a female jellyfish releases eggs into the water, which are fertilised by sperm from a male jellyfish.
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These fertilised eggs turn into tiny, free -swimming larvae called planuli.
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The planuli drift with the ocean currents until they find a good place to settle, like the sea floor or a rock.
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They then attach themselves and become polyps, which look like tiny sea anemones.
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Polyps can stay in this form for a long time, catching and eating small organisms.
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After a while, polyps start to make new jellyfish by forming tiny stacks called aphirae.
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These aphirae eventually break off and become young jellyfish.
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They grow into adult jellyfish which release eggs and sperm into the water starting the cycle again.
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Jellyfish and people.
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Interactions between jellyfish and people cover a wide range of experiences from harmful to beneficial.
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Jellyfish stings are a common concern as their venomous tentacles can cause pain, allergic reactions and, in rare cases, severe health issues.
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Jellyfish are also a source of food for people in several cultures, particularly in Asia, where they are harvested,
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processed and enjoyed for their unique texture and purported health benefits.
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Moreover, jellyfish play a significant role in scientific research.
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Their simple nervous systems and bioluminescent properties have provided valuable insights into cellular processes and neurological functions,
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contributing to advancements in medical and biological sciences.
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Thus, the relationship between jellyfish and humans is a complex interplay of danger, nutrition and scientific discovery.
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Vocabulário e dicas de fala para esta lição
Esta aula de conversação usa o vídeo “All About Jellyfish”. As palavras que mais se repetem: jellyfish, tentacles, bell, ocean, sea. Este vídeo tem 62 frases e 907 palavras para praticar shadowing. A fala dura 7:36. O falante mantém um ritmo estável de cerca de 119 palavras por minuto, confortável para o shadowing. Apenas 72% das palavras estão entre as 3.000 mais comuns do inglês, por isso o vocabulário é exigente.
Vocabulário principal deste vídeo
15 palavras do vídeo que vale a pena aprender, com pronúncia e significado:
| Palavra | Pronúncia | Significado |
|---|---|---|
| egg substantivo | /ɛɡ/ | ovo |
| swim verbo | /swɪm/ | nadar |
| diameter substantivo | /daɪˈæmɪdɚ/ | diâmetro |
| prey substantivo | /pɹeɪ/ | presa |
| sting verbo | /ˈstɪŋ/ | ferroar, picar |
| metre substantivo | /ˈmiːtəɹ/ | metro |
| stretch verbo | /stɹɛt͡ʃ/ | esticar |
| oxygen substantivo | /ˈɑksɪd͡ʒən/ | oxigênio, oxigénio |
| organ substantivo | /ˈɔːɡən/ | órgão |
| cluster substantivo | /ˈklʌstɚ/ | aglomeração, aglomerado |
| harmful adjetivo | /ˈhɑɹmfl̩/ | prejudicial, nocivo |
| umbrella substantivo | /ʌmˈbɹɛl.ə/ | guarda-chuva, guarda-sol |
| jelly substantivo | /ˈd͡ʒɛli/ | gelatina |
| venom substantivo | /ˈvɛnəm/ | peçonha, veneno |
| bone substantivo | /boʊn/ | osso |
Phrasal verbs que você vai ouvir
| Palavra | Pronúncia | Significado |
|---|---|---|
| break off verbo | separar | |
| make up verbo | /ˌmeɪk ˈʌp/ | compensar |
Gramática neste vídeo
As estruturas que o falante mais usa, com as palavras exatas do vídeo:
| Estrutura | No vídeo |
|---|---|
| Voz passiva be + particípio passado — o foco está no que acontece, não em quem faz | are sometimes called · are characterised · are found |
| Orações relativas who / which + oração — informação extra sobre uma pessoa ou coisa | invertebrates, which means · swimming, which means · arms, which are |
Pronúncia para ficar de olho
- Os sons de “th”: thin /ˈθɪn/, thick /θɪk/, smooth /smuːð/, underneath /ˌʌndɚˈniθ/
- Os sons de “sh” e “zh”: capture /ˈkæp.(t)ʃɚ/, interaction /ˌɪn.təˈɹæk.ʃən/, confusion /kənˈfjuːʒən/, nutrition /njuːˈtɹɪʃ.ən/, beneficial /ˌbɛn.ɪˈfɪʃ.əl/
- Palavras longas — acerte a sílaba tônica: diameter /daɪˈæmɪdɚ/, primarily /ˈpɹaɪ.mə.ɹə.li/, biological /ˌbaɪ.əˈlɑ.d͡ʒɪ.kəl/, interaction /ˌɪn.təˈɹæk.ʃən/, beneficial /ˌbɛn.ɪˈfɪʃ.əl/
Sons difíceis para falantes de português:
- Consoante final — sem acrescentar um “i” depois: egg /ɛɡ/, drift /dɹɪft/, defend /dɪˈfɪnd/, thick /θɪk/, contribute /kənˈtɹɪb.jut/
- /l/ final — a língua toca o céu da boca, não vira “u”: trail /tɹeɪl/, settle /ˈsɛtəl/, biological /ˌbaɪ.əˈlɑ.d͡ʒɪ.kəl/, coastal /ˈkoʊstəl/, tropical /ˈtɹɑ.pɪ.kəl/
- /h/ — um sopro suave, diferente do “r”: harmful /ˈhɑɹmfl̩/, harvest /ˈhɑɹ.vəst/, inhabit /ɪnˈhæbɪt/
Como praticar com este vídeo
- Ouça o vídeo inteiro uma vez sem falar e anote as palavras que você não conhece.
- Faça shadowing frase por frase na velocidade normal, repetindo cada uma até o seu ritmo ficar igual ao do falante.
- Grave a sua voz e compare com o original, prestando atenção a palavras como egg, swim, diameter.
O que é a Técnica de Shadowing?
Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.