• Which fish makes eyes at its enemies?
  The twinspot wrasse has two dark patches on its back. Hunting fish ...

• Which fish can attack with a scalpel?
  Surgeonfish, of tropical seas, have sharp little blades like scalpels ...

• Why does the hermit crab need a home?
  Unlike other crabs, the hermit crab has no hard case to protect it. ...

• Which sea creature is the deepest diver?
  Sperm whales are expert divers. Like all whales, they breathe at the ...

• How do fish swim?
  Most fish swim by arching their bodies, and swishing their tails from ...

• Which sea creature uses jet-propulsion?
  The octopus has a funnel-shaped siphon sticking out from its body. It ...

• Which fish “flies” underwater?
  Rays are flattened fish that live near the sea-bed. They swim along ...

• How do jellyfish get about?
  Jellyfish are soft creatures with bodies shaped like bells or ...

• Which fish can walk on land?
  Mudskippers are fish that live in swamps and muddy estuaries on ...

• How do barracuda surprise their prey?
  The barracuda is a fierce hunting fish of tropical seas. It has keen ...