Home
Acknowledgments
Conventions
Glossary
Maps
References
Links
Articles
Thumbnails
Species list
Main page
Next photo
 

 
Pteraeolidia semperi
(Bergh, 1870)
 
Pteraeolidia semperi: regenerating
 
regenerating posterior end of body
We have seen hundreds of P. semperi regenerating, attesting to the effectiveness of their stored nematocysts. Fish that take a bite experience the sting and leave the rest of the animal alone.

Photo:
  PF: Molokini Islet, Maui; Aug., 2007.
 
Pteraeolidia semperi: regenerating, bi-color
 
regenerating, bi-color
Shows an animal (regenerating after a break far forward on the body) that lacks blue pigment on the regenerated portion creating an unusual bi-color effect. Whether it resulted from a somatic mutation while regenerating, a physical/metabolic "error" during regeneration or lack of an environmental precursor/precondition for producing the pigment during regeneration is unknown.

Photo:
  Jennifer Meyer: Molokini Islet, Maui; Sept. 1, 2019.

Pteraeolidia semperi: not yet regenerating
 
not yet regenerating
shows an animal that has lost the posterior portion of its body after the third ceratal cluster but has yet to begin regenerating (supports survival after such a severe loss)

Photo:
  Marketa Murray: about 30 mm: found by Pam Madden; south of Kona, Big Island; April 25, 2021.
Thumbnails
Species list
Main page Next photo Top