Learn English with BBC Blue Planet

• ☐ ☐ ☐ a bladder [n] - a sac which holds liquid
• ☐ ☐ ☐ a membrane [n] - a thin piece of skin, like a sheet
• ☐ ☐ ☐ a sail [n] - a piece of material used to catch wind (usually on a boat)
• ☐ ☐ ☐ a thread [n] - a thin string-like substance
• ☐ ☐ ☐ a tentacle [n] - a thin flexible limb or appendage in an animal
• ☐ ☐ ☐ armed [adj] - carrying weapons
• ☐ ☐ ☐ sting [v] - a burning feeling from the poison of an animal (like a bee)
• ☐ ☐ ☐ lethal [adj] - able to cause death
• ☐ ☐ ☐ lurk [v] - move slowly to stay hidden
• ☐ ☐ ☐ nibble [v] - take small bites
• ☐ ☐ ☐ reel in [phv] - bring in
• ☐ ☐ ☐ paralyzed [exp] - unable to move
• ☐ ☐ ☐ liquify [v] - change into a liquid
• ☐ ☐ ☐ husk [n] - the shell or skin of an animal

[n] - noun,  [v] - verb,  [phv] - phrasal verb,  [adj] - adjective,  [exp] - expression

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1. How does the Portuguese man o' war float?
   It uses its long tentacles.
   It has a bladder filled with gas.
   It has membrane that acts like a sail.
   
   
2. How does it maintain a steady course?
   It uses its long tentacles.
   It has a bladder filled with gas.
   It has membrane that acts like a sail.
   
   
3. How long can the Portuguese man o' war's tentacles be?
   3 meters long
   30 centimeters long
   30 meters long
   
   
4. What type of cells do the tentacles have?
   stinging cells
   lethal cells
   human cells
   
   
5. What do man o' war fish do?
   They nibble on the tentacles of Portuguese man o' war.
   They clean the Portuguese man o' war body.
   They hunt and kill Portuguese man o' war.
   
   
6. How does the Portuguese man o' war catch fish?
   It paralyzes fish with its tentacles.
   It crushes fish with a rock.
   It sprays poison on fish.
   
   
7. How does the Portuguese man o' war "eat" the fish?
   It chews the fish with its large mouth.
   It crushes the fish with its tentacles.
   It liquifies the fish with chemicals.
   
   
8. What remains after the Portuguese man o' war finishes eating the fish?
   Just the tail
   Just the head
   Just the skin
   
   

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Directions: Write sentences about the video clip using the words given. You can change the word form or add words, but you cannot change the word order.
( ) = optional   [ ] = necessary

Instrucciones: Escriba oraciones sobre el videoclip usando las palabras dadas. Puede cambiar la forma de la palabra o agregar palabras, pero no puede cambiar el orden de las palabras.

Instruções:: Escreva orações sobre o videoclipe usando as palavras-chave. Você pode alterar a forma da palavra ou adicionar palavras, mas não pode alterar a ordem das palavras.

지시 : 주어진 단어를 사용하여 비디오 클립에 대한 문장을 씁니다. 어형을 변경하거나 단어를 추가할 수 있지만 어순은 변경할 수 없습니다.

the / Portuguese / man o' war / float / ocean / use / gas-filled / bladder / and / sail-like / membrane

The Portuguese man o' war floats on the ocean using a gas-filled bladder and a sail-like membrane.

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it / have / long / tentacle / that / can / be / as / long / 30 / meter

It has long tentacles that can be as long as 30 meters.

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it / have / long / tentacle / that / can / be / up / 30 / meter / long

It has long tentacles that can be up to 30 meters long.

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these / tentacle / equipped / thousand / stinging / cell / that / can / kill / fish / and / sometimes / even / human

These tentacles are equipped with thousands of stinging cells that can kill fish and sometimes even humans.

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despite / danger / small / fish / call / the / man o' war / fish / live / among / its / tentacle

Despite the danger, a small fish (that is) called the man o' war fish lives among its tentacles.
Despite the danger, small fish (that are) called the man o' war fish live among its tentacles.

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it / able / feed / carefully / on / man o' war / tentacle / as / it / build / up / resistance / sting

It is able to feed carefully on the man o' war's tentacles as it has built up resistance to [the/their] stings.

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most / other / fish / paralyzed / when / catch / by / tentacle

Most other fish are paralyzed when (they are) caught by the tentacles.

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man o' war / then / transfer / prey / to / specialized / tentacle / which / digest / it / use / powerful / chemical

The man o' war then transfers [its/the] prey to specialized tentacles which digest it using powerful chemicals.

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eventual / only / prey / scaly / husk / remain

Eventually, only the prey's scaly husk remains.

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1. What were the three most interesting facts that you learned about the Portuguese man o' war from the video?
2. How does the Portuguese man o' war (Portuguese man–of–war) catch its food? Can you think of other animals that use similar methods?
3. The man mentions that a man o' wars tentacles can be up to 30 meters long. For persepective, what are some other things that are 30m long or high?
4. Explain the benefits and risks the man o' war fish faces while nibbling on the man o' war's tentacles.
5. Can you think of any other examples in nature where one species benefits from a potentially dangerous relationship?
6. How might the Portuguese man o' war influence the ecosystem it inhabits? What role do you think it plays in the food chain?
7. How can you make Portuguese man o' war plural?