Board Thread:Suggestions forum/@comment-29620769-20171221084618/@comment-90.227.170.199-20171221144158

I don't know about the big crabs, but small crabs kinda live on clams and oysters. Since they have pretty strong limbs they can bend up a shell of a clam or an oyster (although that is very hard) and eat it. But of course, if fish gets close enough, they should attack them.

And rivers and lakes don't have crabs. Only rivers have clams, but they are very rare.

Liked the rest of your idea!