A darkish liquid ejected for protection by most cephalopods, such as the octopus and squid. Ink includes remarkably concentrated melanin. Artists have distinct mediums that they use to build their artwork, with one this sort of well known medium getting ink. Ink pens, or dip pens, are frequently utilized https://inkdrawingforbeginners08408.blogs100.com/37154855/not-known-facts-about-ink-pen-drawing-techniques