• What is the smallest fish?
  The dwarf goby holds the record for the world's smallest fish. Adult ...

• What clams up in a hurry?
  Giant clams live on the Great Barrier Reef. Their huge, hinged shells ...

• What is the world’s biggest crab?
  The Japanese spider crab is the giant of the crab world. Its body ...

• Which creature can grow four new arms?
  The starfish is a five-limbed sea creature. If a hungry predator ...

• Which creature throws ink at its enemies?
  Cuttlefish are relatives of squid and octopus. Like their cousins, ...

• What makes a pistol shrimp go bang?
  Pistol shrimps are named after the cracking noise they make by ...

• Which fish “walks” on three legs?
  The tripod fish is a strange fish that lives in deep, dark waters. ...

• How did the butterfish get its name?
  Butterfish are long, slender fish that live in pools on rocky ...

• How does a limpet grip its rock?
  The limpet clamps its muscular foot on to a seaside rock, and grips ...

• Which creature has five sets of jaws?
  Underneath its round, spiny body, the sea urchin has a mouth with ...