Molluscs › Myrrhinidae
Opalescent Nudibranch
Hermissenda opalescens
28 photos
Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.
Photos you add are credited to you, and you keep the copyright.
Easily confused with
Horned NudibranchHermissenda crassicornis
Hilton's AeolidPhidiana hiltoni
Three-lined AeolidOrienthella trilineata
Orienthella piunca
Cooper's AeolidOrienthella cooperi
Price's AeolidApata pricei
White-and-orange-tipped NudibranchAntiopella fusca
Colorful AeolidAnteaeolidiella chromosoma
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| California | 20,201 |
|---|---|
| United States | 13,639 |
| Oregon | 68 |
| Washington | 22 |
| Canada | 11 |
| British Columbia | 11 |
| Mexico | 4 |
| Baja California Sur | 2 |
| Baja California | 1 |
| Sonora | 1 |
Counts show where people looked, not only where it lives.
Traits
Physical
- Shell-bearingProtected by a hard shellFrom its classification
Classification
| Kingdom | Animals · Animalia |
|---|---|
| Phylum | Molluscs · Mollusca |
| Class | Gastropods · Gastropoda |
| Order | Nudibranchs · Nudibranchia |
| Family | Myrrhinidae |
| Genus | Hermissenda |
Sources
- Names, taxonomy and observation counts: www.inaturalist.org
- Photos and recordings: the creator and source are on each one.
- How much to rely on each source
Remember the name next time.
Practise Opalescent Nudibranch with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.