Ink Sac | Cephalopod Anatomy - Encyclopedia Britannica

Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos ink sac References Contents ink sac cephalopod anatomy Ask Anything Homework Help Britannica AI Ask Anything

Learn about this topic in these articles:

form and function

• In cephalopod: Form and function

  …deep-sea Octopoda there is an ink sac located near the anus. This secretes a dark fluid, the sepia or ink, which is forcibly ejected through the funnel.

  Read More

source of sepia

• In sepia

  Sepia is obtained from the ink sacs of these invertebrates. The sacs are speedily extracted from the bodies and are dried to prevent putrefaction. The sacs are then dissolved in dilute alkali, and the resulting solution is filtered. The pigment thus obtained is precipitated with dilute hydrochloric acid and is…

  Read More