What Is Squid Ink?

The video introduces the Giant Squid and discusses its unique defense mechanism using ink. Squid ink is composed of melanin and mucus, serving as a smokescreen against predators. Historically, squid ink was used for writing, known as sepia. The video also highlights the ink colors of squid relatives like cuttlefish and octopus.

In what ways is squid ink similar to the ink used in pens?

What is the significance of the term 'sepia' in relation to squid ink?