Hermissenda crassicornis

Facelinidae
Opalescent Nudibranch
  • Hermissenda crassicornis, Monterey, USA, Photo: Olivia Johnson
    Hermissenda crassicornis, Monterey, USA, Photo: Olivia Johnson
  • Hermissenda crassicornis, San Diego, CA, Photo: Rick Stuart-Smith
    Hermissenda crassicornis, San Diego, CA, Photo: Rick Stuart-Smith
  • Hermissenda crassicornis, San Diego, CA, Photo: Rick Stuart-Smith
    Hermissenda crassicornis, San Diego, CA, Photo: Rick Stuart-Smith
  • Hermissenda crassicornis, British Columbia, Canada, Photo: Ross Whippo
    Hermissenda crassicornis, British Columbia, Canada, Photo: Ross Whippo
  • Hermissenda crassicornis, Monterey, USA, Photo: Olivia Johnson
    Hermissenda crassicornis, Monterey, USA, Photo: Olivia Johnson
Distribution
Description
Information
  • Max Size: 8 cm
  • Sea Temperature Range: 5.1-26.6°C
Rarity
  • IUCN Threat Status: Not Evaluated
  • Occurrence: Common (38% of sites)
    Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed
  • Abundance: Several (6 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
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