Paul can you help me with these as well please.Tks

[patdom]

Thanks a lot to all of you,100% SURE I got this shell diving approx 30 ft last week ,it is still in my fridge,I got it alive .
Where I dive in the North of the DR it is not the carribbean sea but the Atlantic ocean  (the Cassis Madagascarensis for instance do not exist here but do in the south of the island).May be we should not concentrate in the Carribbean...
I don't know,I found I think a few of these shells dead and they turn brownish with white lines...is this possible?