Mollusks live in most terrestrial, freshwater, and marine habitats.
Clams are mollusks that live in the sea or in freshwater.
Clams live in freshwater habitats.
Where do clams live?

  The area was once underwater
  remains of prehistoric life
  Creeks
  Storm drains
  members of their own species
  the environment
  Freshwater habitats
  Ponds