[attachment=135][attachment=136]Both images from Nha Trang (Vietnam). They was collected this summer. I think they areTrochus and Anadara genus, but I don't know the species. Please, help me to ID.
The trochid appears to be a young specimen of Monodonta labio. The bivalve is an Anadara. The combination of round outline, inflated valves and granulated ribs suggest Anadara pilula.