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  2. Barnacle - Wikipedia

    en.wikipedia.org/wiki/Barnacle

    The main sense of barnacles appears to be touch, with the hairs on the limbs being especially sensitive. The adult has three photoreceptors (ocelli), one median and two lateral. These record the stimulus for the barnacle shadow reflex, where a sudden decrease in light causes cessation of the fishing rhythm and closing of the opercular plates. [15]

  3. Perforatus perforatus - Wikipedia

    en.wikipedia.org/wiki/Perforatus_perforatus

    Perforatus perforatus is a large barnacle which grows up to 30 millimetres (1.2 in) in both diameter and height. Its shape resembles a volcano with steep sloping sides. Its shape resembles a volcano with steep sloping sides.

  4. Rhizocephala - Wikipedia

    en.wikipedia.org/wiki/Rhizocephala

    Their body plan is uniquely reduced in an extreme adaptation to their parasitic lifestyle, and makes their relationship to other barnacles unrecognisable in the adult form. The name Rhizocephala derives from the Ancient Greek roots ῥίζα ( rhiza , "root") and κεφαλή ( kephalē , "head"), describing the adult female, which mostly ...

  5. Sacculina - Wikipedia

    en.wikipedia.org/wiki/Sacculina

    Sacculina. Sacculina is a genus of barnacles that is a parasitic castrator of crabs.They belong to a group called Rhizocephala.The adults bear no resemblance to the barnacles that cover ships and piers; they are recognised as barnacles because their larval forms are like other members of the barnacle class Cirripedia.

  6. Austromegabalanus psittacus - Wikipedia

    en.wikipedia.org/wiki/Austromegabalanus_psittacus

    Austromegabalanus psittacus, the giant barnacle or picoroco as it is known in Spanish, is a species of large barnacle native to the coasts of southern Peru, all of Chile and southern Argentina. [ 2 ] [ 3 ] It inhabits the littoral and intertidal zones of rocky shores and normally grows up to 30 centimetres (12 in) tall with a mineralized shell ...

  7. Chamaesipho brunnea - Wikipedia

    en.wikipedia.org/wiki/Chamaesipho_brunnea

    Chamaesipho brunnea is an intertidal barnacle common in New Zealand, in both the North Island and the South Island. Juveniles have six shell wall plates, reducing to four in adults, and with age, all plates become concrescent, with no trace of sutures inside or out. Shell is brown colored.

  8. Pollicipes polymerus - Wikipedia

    en.wikipedia.org/wiki/Pollicipes_polymerus

    Pollicipes polymerus, commonly known as the gooseneck barnacle or leaf barnacle, is a species of stalked barnacle. It is found, often in great numbers, on rocky shores on the Pacific coasts of North America .

  9. Semibalanus balanoides - Wikipedia

    en.wikipedia.org/wiki/Semibalanus_balanoides

    Semibalanus balanoides (common barnacle, common rock barnacle, or northern rock barnacle) is a common and widespread boreo-arctic species of acorn barnacle. It is common on rocks and other substrates in the intertidal zone of north-western Europe and both coasts of North America .