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- Sharks have an amazing sense of smell.
- They have tiny little pores in the skin between their eyes and their mouth, which acts as their nose sensing, smells in the water.
- Sharks can also detect electrical impulses and almost every living creature gives out an electrical impulse.
- About 70 percent of a shark’s brain is used for the sense of smell.
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- Sharks can detect blood in the water from half a kilometre away.
- Sharks can’t chew their food, they bite it, swallow it whole and their stomach juices break it down.
- Most sharks have to keep swimming to be able to breathe.
- Sharks have been around for over 400 million years - since before dinosaurs were alive.
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- The great nose test.
- You could try this in the classroom or with a friend.
- What you need:
- Foods with different smells (chocolate, peeled orange, salt & vinegar crisps, honey - anything you can think of)
- Opaque plastic bags (bags you can’t see through)
- A cloth
- What you do:
- Put the different foods in separate opaque plastic bags. Put the bags on a table under a cloth. Blindfold your friend then get them to sniff each smell coming from the plastic bags, one by one. Write down how many they get right, then you try it.
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- Sniff out the smells
- Use your sense of smell to see what you can detect. Close you eyes and sniff about. What can you smell?
- How close do you need to get to your dinner before you can smell it? (Remember a shark can smell blood from half a kilometre away)
- Have someone make up a packet of clear cordial drink. Can you pick which flavour it is using only your sense of smell?
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- What did the left eye say about the left nostril?
- That nostril knows (nose) everything!
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