Night of the Crabs – A Complete English Lesson Plan for B1–C1 Learners
Looking for a high-interest reading lesson that blends suspense, mystery, and creative thinking? Night of the Crabs is a gripping short story designed for intermediate to upper-intermediate English learners (B1–C1). This lesson plan includes everything you need to guide your students through a rich and varied English learning experience — all based on one dramatic and imaginative story.
This lesson is ideal for building reading comprehension, vocabulary, speaking, writing, and critical thinking skills. It’s especially great for classes that enjoy science fiction or mystery themes.
Table of Contents
Toggle✅ Included in the Lesson Plan:
A full short story, divided into manageable sections
Reading comprehension questions after each section
A complete vocabulary table with upper-intermediate words
Synonym and antonym matching exercises
A gap-fill vocabulary activity for practice and recall
A definition matching task with answer key
20 discussion questions to get your students talking
A dynamic role play exercise to develop fluency and problem-solving
A creative writing extension task with optional prompts
Whether you’re teaching in-person or online, this lesson provides flexible, high-impact content your students will enjoy — while practising real-world English skills.
📥 Download the complete lesson plan and materials
Click the link below to download everything you need to teach Night of the Crabs in your English class!

Introduction
Have you ever seen a strange or unusual animal in real life or on the news? What was it?
What comes to mind when you think of the sea or the beach? Is it a relaxing or dangerous place? Why?
What would you do if you discovered a giant creature in your town? Who would you tell first?
Why do you think people are fascinated by mysterious or unknown creatures?

Night of The Crabs
Laura Denham had never seen anything like it in all of her career.
As a marine biologist, she had photographed some of the most incredible sights anyone could wish to see in the oceans of the world.
But to see all of this on a beach in a small town in the south-west of England was something else.
At this time of year, the beach was usually filled with red-skinned tourists.
Now it was filled to capacity — with crabs.
And not just the usual kind of crabs that naturally lived in Cornwall.
These were huge things. She wasn’t even sure what species she was looking at.
All she could see so far were their huge glittering shells as they crawled over each other. Their great, thick legs clawing over each other to gain purchase.
And the claws.
As big as a man’s body. And strong enough to snap any of the tourists in half.
They had reached the promenade wall and could not get any further.
“So far, that is the only thing holding them back,” said the police officer to Laura. “There are the two pathways leading down to the beach, but we have successfully blocked those.”
He pointed to the pathways at either end of the promenade.
Big steel drums had been placed in the way.
Crabs clawed at the rows of drums but could not move them out of their way.
“We need to know what to do with them,” said the young cop. “That’s why we called you.”
Laura gazed out at the beach filled with crabs.
It was an incredible sight.
“I am not sure what species these crabs are,” she said. “But I think we can safely ascertain that they are not from here.”
“Just let us know what to do to get them back in the sea,” said the policeman.
A young man had climbed over the promenade railing, aiming for a close-up shot of the crabs. Their large claws reaching up to him from below.
The policeman jogged towards the guy and pulled him back. His two friends laughing and enjoying the show.
Laura pulled her camera up to her face and started to take pictures of the large crabs on the beach.
She was able to get a few close-up pictures using her zoom lens.
Back at the B&B, Laura wasted no time uploading the photos.
She sat in front of her computer, comparing her own pictures to pictures she found online.
The crabs on the beach resembled a species of crab from the Pacific Ocean. But what were they doing here? Cornwall was miles away from their home.
Why had they travelled all this way?
And the species she found online were all black. These crabs had reddish claws.
She flicked through website after website, crab database after database, but couldn’t find anything that exactly matched the crabs she saw on the beach.
Finally, she sent her pictures to someone she knew.
She hated asking for help. Pride told her she should identify the species herself.
She had always forced herself to work alone, determined to find answers using only her own research.
Laura had worked with Professor Edmund Price in Greece a few years back and since then they had been in regular contact. The professor’s expertise lay in crustaceans.
“I have been knee-deep in crabs most of my life,” he said.
It was true that there was very little he did not know about crabs.
She sent the email and then had dinner in the local area. She ate fish and chips alone.
In the small restaurant, she overheard some of the town residents talking about the huge crabs that had taken over the beach.
A combination of fascination and fear. Some wondering where they were from and how they got there. Others wondering what the police would do about it.
The owner of the fish and chip shop injected some humour by saying maybe he could cook up a load of crab and make a few quid out of it.
After a restless dinner, she felt compelled to see the beach again under cover of darkness.
Laura walked back along the seafront.
Police marked the territory. They didn’t allow anyone too close to the beach area.
Laura showed her card and was allowed to peer over the edge of the railing. In the darkness, the crabs had a far more sinister appearance.
The sound of claws scraping over shells. And the eerie hissing and clicking from their mouths.
Like they were waiting to enter the town itself.
Laura wandered back to the bed-and-breakfast. She watched TV for a little while — some late-night drama was on — but then she felt sleepy and went to bed.
She fell asleep almost immediately.
Her dreams were filled with strange luminous crab-like creatures, taking over a small town in the English countryside. Using their huge machine-like claws to rip cars in half.
After what felt like just a few minutes of sleep, Laura was awoken by the sound of her computer beeping.
It was the sound of an incoming email.
Laura knew she had work to do, and she dragged herself out of bed. She plugged the small kettle in to boil some water, while she went to the bathroom.
Outside, she could hear the sound of people calling out to each other. Their voices raised in alarm.
Word had clearly spread about the crabs. Now, people wanted a better view.
A police siren wailed down the street.
Laura poured herself a cup of instant coffee and sat down at the computer.
There was a narrow street just outside her window and she could hear the neighbours yelling at each other.
Then a scream — sharp, panicked. The street below erupted in chaos.
She clicked open the email window on her computer and saw a reply from Professor Price.
She read it once. Then again. The words didn’t make sense.
Laura blinked at the screen.
‘Extinct for over ten thousand years…’ the professor had written. ‘Toxic claws capable of killing sharks.’
Her eyes fell to the illustration. Red claws. Massive bodies. Exactly what she had seen on the beach.
Then came the unmistakable sound — the clatter of giant claws on stone.
A thud. Then another.
Laura rushed to the window.
And saw them.

Reading Comprehension Questions
These are all the reading comprehension questions in full.
You can find model answers to the questions at the end of the lesson plan.
What is the name of the story?
Where does it take place?
Who is the main character?
What is her profession?
How does she usually spend her time in her career?
What unusual sight does she see on the beach?
How are these crabs different from typical ones found in Cornwall?
How big are the crabs’ claws?
What is currently stopping the crabs from entering the town?
How have the police tried to block the crabs?
Why was Laura called to the scene?
What does Laura believe about the origin of the crabs?
What do the police want Laura to help them with?
What is the young man trying to do?
How did the policeman respond to this?
What did Laura do with her camera?
What does she do with the pictures back in her bed-and-breakfast?
What did she notice when comparing her photos to online images?
What feature made the crabs different from the known Pacific species?
Why was Laura reluctant to ask for help?
Who is Professor Edmund Price?
What does Professor Price specialise in?
What does Laura eat for dinner?
How does the town react to the crabs on the beach?
What joke does the fish and chip shop owner make?
After eating, where does Laura go?
Are the police still there or not?
What does Laura show to get closer to the railing?
How were the crabs different at night?
What sounds did the crabs make?
Back at her B&B, what does Laura do?
What did Laura dream about?
What does the dream suggest about her feelings?
What woke Laura up?
What could Laura hear outside her window?
What machine does she turn on? Why does she do this?
How had the situation with the crabs changed?
What was the public’s reaction?
What happened in the street that indicated things were getting worse?
What did the email from Professor Price say?
How long had the crab species supposedly been extinct?
What alarming fact did the professor mention about the crabs?
What sound did Laura hear that confirmed the danger?
What does the final line suggest about what Laura saw?

Essential Vocabulary
alarm | extinct | research |
ascertain | fascination | residents |
biologist | glittering | scraping |
capacity | illustration | sights |
chaos | incoming | sinister |
combination | pathways | species |
crustaceans | poisonous | terrace |
determined | promenade | toxic |
erupted | regular | zoom |
expertise | scraping | luminous |
Exercise
Write down all the words and phrases in your vocabulary notebook. Look in your dictionary and find the meaning of each word. Write the definition next to each word.
Then make up your own sentences using each word or phrase.
For example:
Extinct – no longer existing; when a species of animal, plant, or other organism has died out completely.
Ascertain – to find out something for sure; to make certain of something, usually by checking or investigating.
Then write a sentence of your own that uses the new word or phrase correctly.
Many animals have become extinct due to loss of habitat and climate change.
The doctor needed to ascertain the cause of the patient’s symptoms before starting treatment.
Do this with all the vocabulary and, over time, this will help improve all your English skills – reading, writing, speaking and listening.

Discussion Questions
Look at the list of questions below.
Discuss these together in your class. Or with your friends or study mates.
There are no correct answers to many of these questions, as they are subject to personal opinion.
Story-Based Questions
What was Laura Denham’s job, and why was she called to the beach?
How did the police try to stop the crabs from entering the town?
What do you think the young man on the promenade was trying to do? Was it brave or foolish?
Why did Laura send her photos to Professor Price? Would you have done the same?
What clues suggested that the crabs were not native to Cornwall?
Why was Laura uncomfortable asking for help? Do you think it’s okay to ask for help in a difficult situation?
What was strange about Laura’s dream? What do you think it meant?
How did the atmosphere change when Laura visited the beach at night?
What was the local community’s reaction to the crabs? How would people in your town react?
What did Professor Price’s email reveal about the crabs?
Imaginative & Personal Questions
What would you do if you saw giant crabs on the beach in your town?
If you were Laura, how would you respond to the police officer’s request for help?
Imagine you’re a journalist sent to report on the event — what questions would you ask Laura?
What do you think might happen next in the story? Write or explain a possible ending.
If the crabs entered the town, how would people try to protect themselves?
Why do you think these crabs reappeared after being extinct for 10,000 years?
Have you ever seen a strange or mysterious animal in real life or in the news?
If you could study any kind of animal, what would it be and why?
What would make this story even more terrifying or suspenseful?
Do you enjoy stories with mystery and science-fiction elements? Why or why not?
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