Dangerous Creatures: Coral Reef

   It’s hard to believe that a coral reef could have enemies that threaten to destroy it.
   Many people don’t realise that a coral reef is actually a collection of living creatures.
   Sometimes, things that look really tasty are anything but, like the lettuce slug.
   Reef sharks. Fish always need to be on the lookout for these fierce hunters.
   If you’re ever wading around a reef, keep an eye out for the stonefish.
   Have you ever seen so many colours?
   Starfish. Now, here are some surprisingly nimble creatures!
   Video: Coral reefs are colourful, mysterious and fragile worlds. We need to protect them now, so that the creatures that inhabit them, as well as ourselves, can continue to enjoy these special places.
   Advice: Diving on a coral reef is something similar to visiting another planet. There are animals that look like plants. Even the rocks are alive. And there, we are the aliens.

Next: If you visit a coral reef, you’ll find beauty and some danger. The same is true of the murky ocean depths.