• Why do crabs walk sideways?
  All crabs have ten legs - eight for walking and two with powerful ...

• Which fish would disappear on a chess board?
  Plaice are flatfish that live on the sea-bed. In a matter of minutes, ...

• What needs a new suit of armor every year?
  A crab's shell gives good protection. The disadvantage is that there ...

• Where is the world’s biggest coral reef?
  The Great Barrier Reef off the north-east coast of Australia is the ...

• What fish is a thirsty bloodsucker?
  Lampreys are strange fish with eel-shaped bodies. Instead of jaws, ...

• What are dead man’s fingers?
  Dead man's fingers is a species of soft coral that grows on rocks. ...

• How do herring avoid being eaten?
  Fish, such as herring and mackerel, swim in groups called shoals. ...

• Why does a crown-of-thorns threaten coral reefs?
  The crown-of-thorns starfish is a reef-killer. It fastens on to the ...

• What is slimy and hides in anemones?
  In tropical seas, clownfish hide from their enemies among the ...

• Which fish has the head of a horse and the tail of a monkey?
  The sea-horse is an unusual fish, with a head shaped like the knight ...