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Coral Reefs treasure hunt

Coral reefs are among the most colourful and biodiverse ecosystems on Earth. With our GPS treasure hunts, you will discover the secrets of these underwater paradises, learn about the fascinating symbiosis between coral and algae, and experience why these reefs are so crucial for marine life.

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Made today: speutoch duin in Almere

Coral Reefs treasure hunt - GPS treasure hunt Nature

Available nature treasure hunts (5)

Start location

Natuur in de Stad

Groningen, Groningen, Netherlands
Fiets langs de mooiste groene plekken van Groningen. Ontdek parken, vijvers en stadsbossen waar je midden in de stad to…
Natuur 9-10 year
40 min 4,0 km 10 1
Start location

Strand en zee ontdekken

Den Haag, Zuid-Holland, Netherlands
Een leuke speurtocht langs het strand en de boulevard van Scheveningen. Leer alles over de zee, schelpen en zeedieren!
Natuur 9-10 year
40 min 1,8 km 10 13
Start location

Natuur en dieren bij Kijkduin

Den Haag, Zuid-Holland, Netherlands
Pak je fiets en ontdek de prachtige natuur rond Kijkduin. Van duinen tot bossen, van zeevogels tot konijnen - de natuur…
Natuur 9-10 year
55 min 6,0 km 10 3
Start location

Natuur in het Kralingse Bos

Rotterdam, Zuid-Holland, Netherlands
Een leuke speurtocht voor de allerkleinsten door het mooie Kralingse Bos! Kijk goed om je heen naar bomen, bloemen, een…
Natuur 5-6 year
35 min 1,3 km 10 2
Start location

Natuur ontdekken in het Vondelpark

Amsterdam, Noord-Holland, Netherlands
Een leuke speurtocht door het Vondelpark voor de allerkleinsten! Tel eendjes, zoek bloemen en ontdek de natuur om je he…
Natuur 3-4 year
40 min 1,5 km 10 5

Featured this week: example questions for Coral Reefs

New example questions from the library every Monday. Updated on 5 October 2026.

What does a jellyfish feel like?
Soft and smooth Hard and rough Pungent Warm
How big is a clownfish?
Small As big as a car As big as a house As big as a tree
What does a sea turtle eat?
Seagrass Biscuits Milk Candy
What is a baby sea turtle called?
Turtle Fish Crab Star
How does a seahorse swim?
Upright Upside down Sideways Very quickly
What colour ink does a squid squirt?
Black Red Blue Yellow
What colour is a blue tang fish?
Blue Red Green Purple
Where do coral reefs grow?
In warm sea In cold river In the forest On the mountain
Create a coral reefs treasure hunt for Ages 3-4
What do baby sea turtles do after hatching?
Swim to the sea Go to sleep Look for their mom Eat sand
What does a clownfish do when it is scared?
Hides in a sea anemone Runs away Starts crying Calls for mom
How warm is the water around coral reefs?
Nice and warm Ice cold Very hot Frozen
Which animal on the coral reef looks like a snake?
Moray eel Seal Whale Crab
What do corals live on?
Sunlight Rain Wind Snow
What does a hermit crab hide in?
An empty shell A cupboard A nest A cave
What kind of teeth does a parrotfish have?
Like a parrot's beak Very tiny teeth No teeth Golden teeth
What shape is a sea cucumber?
Long and round Square Triangular Like a star
Create a coral reefs treasure hunt for Ages 5-6
Which fish often has beautiful stripes and lives near corals?
Clownfish Shark Whale Eel
What big fish can you sometimes see at coral reefs?
Reef shark Cod Herring Trout
How big can coral reefs get?
As big as an entire city As big as a football As big as a car As big as a house
How does tiny algae help corals?
They give food to the coral They sing songs They make the water blue They swim away
How deep underwater do coral reefs usually grow?
Not very deep Very deep Above water On the beach
How many eyes do most fish have at coral reefs?
Two Four Six Eight
Which animal looks a bit like a flower but lives in coral reefs?
Sea anemone Seal Sea otter Cuttlefish
How do corals protect themselves from danger?
They retract their tentacles in They swim away They call for help They bite
Create a coral reefs treasure hunt for Ages 7-8
Why do coral reefs grow mostly in shallow waters?
They need sunlight Deep water is too warm They are afraid of big fish Shallow water has more salt
What colour do healthy coral reefs usually NOT have?
Grey Orange Purple Pink
Which fish has a special relationship with sea anemones?
Clownfish Hammerhead sharks Flying fish Cod
Which famous coral reef lies off the coast of Australia?
Great Barrier Reef Red Sea Reef Caribbean Reef Pacific Ring Reef
What do parrotfish eat that is important for coral reefs?
Algae growing on corals Small fish Seaweed Plankton
Which part of a coral provides the bright colours?
Tiny algae living in it The seawater The sunlight The fish around it
How long does it take for a coral reef to grow completely?
Thousands of years A few weeks One year Ten years
What is coral bleaching?
Corals turn white and die Corals darken Corals grow faster Corals get bigger
Create a coral reefs treasure hunt for Ages 9-10
Which type of pollution is highly damaging to coral reefs?
Sunscreen with chemicals Seaweed Seawater Sand
Which corals look like brains?
Brain corals Table corals Staghorn corals Fan corals
What is typical of the eyes of bumblebee fish?
They can move independently of each other They are always closed They are transparent They give light
Which sea urchins often have long, thin spines?
Diadem sea urchins Heart sea urchins Dollar sea urchins Cucumber sea urchins
Which fish eat corals and turn them into sand?
Parrotfish Clownfish Doctor fish Butterflyfish
Which large fish are harmless and only eat plankton?
Whale sharks Tiger sharks White sharks Hammerhead sharks
What happens if sea levels rise too fast?
Corals get too little sunlight Corals grow faster Corals become more colourful Corals multiply faster
Which shells sometimes have beautiful pearls?
Pearl oysters Snail shells Starfish Crab scissors
Create a coral reefs treasure hunt for Ages 11-12
What percentage of the Great Barrier Reef has experienced fading since 2016?
50% 25% 75% 90%
At what maximum depth can coral reefs still grow?
60 metres 100 metres 30 metres 200 metres
What percentage of all marine fish species live in coral reefs?
25% 10% 50% 75%
What are baby corals called?
Planula larvae Corals Juveniles Trace
What is the largest atoll in the world?
Kwajalein Bikini Maldives Great Barrier Reef
What is the oldest known coral reef formation?
540 million years old 100 million years old 1 billion years old 10 million years old
Which nutrient is harmful to corals in high concentrations?
Nitrogen Calcium Magnesium Potassium
Which coral formation is formed around a sinking volcanic island?
Atoll Franjerif Barrier reef Patchrif
Create a coral reefs treasure hunt for Ages 13-14
What role do crypto-benthic fishes play in coral reef ecosystems?
Important link in food chain despite small size Main predators of coral polyps Primary coral builders Parasitic organisms
What is the function of the mucus produced by coral polyps?
Protection against sediment and pathogens Attracting food particles Communication with other corals Regulation of water temperature
How many years can it take for a coral reef to fully recover from bleaching?
10-15 years 2-3 years 25-30 years 1 year
Which area is known as the 'Coral Triangle' for its biodiversity?
Southeast Asia and Western Pacific Caribbean sea Red sea Indian Ocean
What depth is optimal for most coral species?
0-30 metres 30-60 metres 60-100 metres 100-150 metres
Which coral is known as the fastest-growing reef coral?
Acropora cervicornis Montastrea cavernosa Porites astreoides Diploria strigosa
What property makes staghorn coral (Acropora) particularly vulnerable?
Rapid growth but fragile structure Slow growth and low diversity Lack of zooxanthells Great depth preference
How many tentacles do most coral polyps have?
6 or multiples of 6 8 or multiples of 8 4 or multiples of 4 10 or multiples of 10
Create a coral reefs treasure hunt for Ages 17-18
Which coral reef is known as the largest living organism on Earth?
Great Barrier Reef Mesoamerican Reef Red Sea Coral Reef Caribbean Coral Reef
Which anemone species has a symbiotic relationship with clownfish?
Heteractis magnifica Actinia equina Metridium senile Aiptasia pallida
What is the smallest reef-building coral species?
Leptoseris species (a few millimetres) Porites species Acropora species Favia species
What is the main component of the skeleton of hard coral?
Calcium carbonate Magnesium oxide Silicon dioxide Calcium phosphate
Which family of molluscs is most common on coral reefs?
Snails Bivalves Octopuses Squids
What protection status does the Great Barrier Reef have?
UNESCO World Heritage Site RAMSAR Wetland Biosphere Reserve National Marine Sanctuary
What happens to coral during the night?
Polyps hatch to feed The coral goes into complete rest The colours become more intense Skeleton grows fastest
What depth is optimal for most reef-building corals?
0-40 metres 40-80 metres 80-120 metres 120-200 metres
Create a coral reefs treasure hunt for Ages 18+

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Frequently asked questions

A Coral Reefs scavenger hunt is a GPS-guided outdoor activity with quiz questions about Coral Reefs, part of the theme Nature. You walk a route past various locations and answer fun questions along the way.

There are 7450 questions available about Coral Reefs: 7450 multiple choice questions, 0 open questions and 0 assignments. The category Nature has more than 133631 questions in total.

There are Coral Reefs questions for all ages: from 3-5 years (toddlers) to 20+ (adults). The questions are automatically adapted to the chosen level.

Go to oppatt.io, create a free account, choose the theme Nature and select Coral Reefs as the topic. Choose an age category and location, and you'll have a complete scavenger hunt within a minute.