Hello sir @kus-knee, I like everything here and like your contest. They are very creative. I put @deltasteem for the first place because he displays something different from the others. If the other shell is open, he displays the shell does not come out. Second place for @axeman very brave to display a transparent shell, third @nelinoeva for three shells that are racing to the top, hehe. and fourth @amico which displays a shell that is being accompanied by human to walk to the side of the road.

I love all creativity from photographers here, I am just see and this is only my opinion, I am not creative than all of you. Please forgive me. Blessing