### Clue: Sperm whales' innards may contain this novelist pierced by ice floating in sea and river (9)
### Answer: AMBERGRIS 
 ### Explanation: Definition: Sperm whales' innards may contain this
  AMIS(novelist Kingsley or son Martin) **containing**(pierced by) [BERG(ice floating in sea) R($$r$$iver)] 
Answer:  Secretion from the sperm whales' intestine,innards .  After aging, it becomes hard and marbled grey, hence it name from Latin for grey amber.  It also turns from being foul-smelling to something that is used in perfumery.