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Hypselodoris imperialis
(Pease, 1860)
 
Hypselodoris imperialis: pair just finishing laying eggs
 
pair just finishing laying eggs

Hypselodoris imperialis: ribbon emerging from under left side of foot
 
ribbon emerging from under left side of foot

Hypselodoris imperialis: eggs, detail
 
eggs, detail

Hypselodoris imperialis: completed egg masses
 
completed egg masses photographed on Nov. 23rd

shows paired animals laying eggs: In the first photo, the left animal is just completing the right mass while the right animal has been blocked in its turn and is extending the ribbon of the left mass around the bottom of the right mass. The egg ribbon is extruded from the right side behind the head, then passed under the body and attached by the foot while the animals turn counterclockwise.

Photos:
  Rebecca Bicker: Maalaea Bay, Maui; Nov. 21, 2022.

Hypselodoris imperialis: pair just starting to lay eggs
 
pair just starting to lay eggs

shows paired animals just starting to lay eggs (obvious for right animal, deduced from posture for left animal); The egg mass is being extruded from the right side and passing under the foot for attachment as the animals turn counterclockwise.

Photo:
  Carol Riccio: Keawakapu Beach, Maui; May 2, 2020.
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