What's your
Reef IQ?
Play our new game
Reef IQ for teachers Download free resources!

Reef Check's E-News

Reef Check Membership

Our Champions

Empowering people to save our reefs and oceans

Coral reefs can be fun too!

How much do you know about coral reefs?

Which creatures live on them?

What are the dangers to them?

What can we do to help protect ours?

Dive in to find out all the answers by playing our fun Reef IQ Game. Compete with friends to see who can identify the creatures of the reef the best and the quickest!REef iq game

Other fun things

We also have some great ideas for fun things you can do at home or at the beach. Have a go and get some friends to join in, but be prepared to get dirty!

Make your own disappearing squid

What you need:

Permanent marker


Food colouring

Water in a big tub, bath or pool

What you do: 
  • Turn your balloon into a squid using the marker to draw eyes and tentacles - use your imagination!
  • Fill a large basin or bathtub half-full with water.
  • Place 5 drops of blue food colouring in the balloon.
  • Place the balloon over the tap and turn on the water until the balloon is almost full, then turn off the water.
  • CAREFULLY put one hand under the balloon to support it, then pinch the top of the balloon closed before pulling it off the tap.
  • Now put it in the water and let it go.


Sea for yourself!

What you need:

2 plastic straws

3 differently shaped pieces of fruits or veggies (such as banana, cherries, apple)

What you do...to find food:

Place fruit or veggies on a table and hold one straw in each hand. These are you antennae! Close your eyes and ask a friend to mix up the fruit and veggies.

Now, were you able to tell the difference between the food items you picked? Imagine you are a lobster searching for a meal. Could you find your dinner? Have a friend mix up the objects on the table and see if you can still identify them!

What you do...to detect danger:

Stand one arm's length from a wall and hold your straws in front of you. Close your eyes and move very slowly towards the wall.

Can you detect the wall using your antennae before you bump into it? When lobsters detect danger, they escape by snapping their tails underneath them and swimming quickly - backwards!


Sponge experiment!

What you need:

Drinking glass or other see-through container



Piece of bread or some crackers

Coffee filter

What you do:

Fill up the bowl with water and add the bread or crackers. Mix it around until it's nice and messy! Have someone hold the filter open above a basin and pour the messy water into the filter.

Take a look at the filter and see what happened. 


Think Tank!

What you need:

Handful of sand


Empty bottle

Pinch of salt

What you do:

For this experiment, while you're at the beach, collect a handful of sand and put it in a bottle.

At home have your mum or dad pour some vinegar into a cup and add a pinch of salt.

Next, pour some of the vinegar mixture into the bottle of sand. What happens?

Did the sand start to bubble? Why do you think this happens? Try to do a little research on this experiment and then share your new knowledge with your family.


Sandcastle smash experiment

What you need:

A beach

A buddy/parent

Your imagination!

What you do: 
  • Build a simple sandcastle at the edge of the water.
  • Sit in the water at the edge of the sand with your legs facing parallel to the shore and blocking the sandcastle.
  • Have your buddy use their hands to make waves that go over your legs and "break".
  • Now you and your buddy can both stand up and make waves that strike the sandcastle! 

What happened to the waves and sandcastle when you were sitting down? Did your legs block the waves? What happened to the castle when you and your buddy stood up and made waves? What can you compare your legs to in this experiment? Hint: How do coral reefs help shorelines?

All these activities come from the Reef Check International publication "Reef Check Adventures" for children. You can purchase this through our Sea Store.