External Anatomy Use the cursor to point to different parts of the image for information about octopus anatomy. The right or left eye. Octopuses have excellent vision. The gill slit.
Water is drawn in here by expansion of the mantle.
Field Identification white stripe from eye to base of 2nd arm. Head, containing eyes, brain, and mouth. The mantle, which contains the internal organs. Octopuses have 8 arms, numbered 1-4 on each side of the body. Thus the 1st arm on the right side is R1, the 2nd R2, etc.