Help in identifying 3 shells from Mauritius

[robzy]

Hi

I am moving to Australia from South Africa, and need to determine the names of these shells I acquired while in Mauritius. I need to ensure they are not of CITES concern.

Any help in identifying these 3 shells will be appreciated; I know nothing about shells, except that the one is some sort of Cowrie.

Shell 1:
   
   

Shell 2:
   
   

Shell 3: