1.   Walrus tusks were essentially substitutes for ivory in territories remote from supplies of elephant tusks.

2.   Before elephant ivory was available from Africa, northern Europeans prized walrus tusks, carving them into crosses, buttons, knife handles and saddle pommels.

3.   Boris Yeltsin brought an ivory walrus tusk with a carving depicting seven three-dimensional walrus.

4.   The sale of dead animals or parts is also prohibited, including walrus tusks and whale baleen.