My penis has dark points

Hi there guys, so along time ago i realised that i had this points in my penis, could someone tell me what are they? 

Looks like a birth mark. If it doesn't itch or bleed then nothing to worry about.

Hmm i knew i had the side mark along time ago but i nevet seen the bottom one, is it normal?

Can this be an higienic problem?

Do you have anymore or did more appear?  I have something similar going on.