Hexabranchus pulchellus Pease, 1860
|also note the commensal
shrimp, Zenopontonia rex (= Periclimenes imperator),
on the gills of the left animal (at far left edge, facing downward)
Photos: John Earle: Makua, Oahu; Sept. 30, 2009.
dark & light
|shows dark and light
animals copulating; light animal has extensive damage, perhaps
due to predation (missing branchia, missing right rhinophore,
irregular pitting of notum between them)
Photos: Todd Hackett: largest about 300 mm: Kohala, Big Island; Aug. 15, 2021.