morphology of an octopus![click to hear](/images/speaker.jpg)
siphon ![click to hear](/images/speaker.jpg)
Tubular muscular organ, conical at its opening at the dorsal mantle cavity; the octopus discharges water through it to move quickly and to oxygenate itself.
mantle ![click to hear](/images/speaker.jpg)
Thick fold of tissue enveloping the body of the octopus and secreting the shell, which is hidden inside.
eye ![click to hear](/images/speaker.jpg)
Developed organ of sight used to make out light intensity, motion, shapes and certain colors.
tentacle ![click to hear](/images/speaker.jpg)
Long powerful muscular appendage located around the mouth and used for locomotion and grasping.
sucker ![click to hear](/images/speaker.jpg)
Adhesive disk surrounded by a flexible ring located on the ventral surface of the tentacle and used for suction and anchoring.