Random Riddle: A Fisherman’s Tale

When telling a story
About flounder or dory,
I often end up far apart.

But when bowing your head
Or mourning your dead,
I’m together and close to your heart.

You may lend me or hold me
Or show me or fold me,
And all this is merely a start.

What am I?
 

Random Riddle: A Fisherman's Tale