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  2. Octopus - Wikipedia

    en.wikipedia.org/wiki/Octopus

    The digestive system of the octopus begins with the buccal mass which consists of the mouth with its chitinous beak, the pharynx, radula and salivary glands. [46] The radula is a spiked, muscular tongue-like organ with multiple rows of tiny teeth. [ 30 ]

  3. Cephalopod beak - Wikipedia

    en.wikipedia.org/wiki/Cephalopod_beak

    The beak of a giant squid. All extant cephalopods have a two-part beak, or rostrum, situated in the buccal mass and surrounded by the muscular head appendages. The dorsal (upper) mandible fits into the ventral (lower) mandible and together they function in a scissor-like fashion. [1] [2] The beak may also be referred to as the mandibles or jaws ...

  4. Cephalopod - Wikipedia

    en.wikipedia.org/wiki/Cephalopod

    All living cephalopods have a two-part beak; [12]: 7 most have a radula, although it is reduced in most octopus and absent altogether in Spirula. [ 12 ] : 7 [ 98 ] : 110 They feed by capturing prey with their tentacles, drawing it into their mouth and taking bites from it. [ 25 ]

  5. Cephalopod limb - Wikipedia

    en.wikipedia.org/wiki/Cephalopod_limb

    Cephalopod limbs bear numerous suckers along their ventral surface as in octopus, squid and cuttlefish arms and in clusters at the ends of the tentacles (if present), as in squid and cuttlefish. [9] Each sucker is usually circular and bowl-like and has two distinct parts: an outer shallow cavity called an infundibulum and a central hollow ...

  6. Radula - Wikipedia

    en.wikipedia.org/wiki/Radula

    A typical radula comprises a number of bilaterally-symmetrical self-similar rows of teeth rooted in a radular membrane in the floor of their mouth cavity. Some species have teeth that bend with the membrane as it moves over the odontophore, whereas in other species, the teeth are firmly rooted in place, and the entire radular structure moves as one entity.

  7. Siphon (mollusc) - Wikipedia

    en.wikipedia.org/wiki/Siphon_(mollusc)

    The internal anatomy is visible, including the paired siphons to the right. A siphon is an anatomical structure which is part of the body of aquatic molluscs in three classes: Gastropoda, Bivalvia and Cephalopoda (members of these classes include saltwater and freshwater snails, clams, octopus, squid and relatives).

  8. Octopus bites woman after she put creature on face for photo ...

    www.aol.com/news/octopus-bites-woman-she-put...

    A Washington state woman was bitten by an octopus as she placed the creature on her face for a photo opportunity last week. Fishing guide Jamie Bisceglia, 45, landed in the hospital after she held ...

  9. Common octopus - Wikipedia

    en.wikipedia.org/wiki/Common_octopus

    The structure of the octopus' gills allows for a high amount of oxygen uptake; up to 65% in water at 20 °C (68 °F). [22] The thin skin of the octopus accounted for a large portion of oxygen uptake in an in-vitro study; the estimate suggests around 41% of all oxygen absorption is through the skin when at rest. [18]