Molluscs › Polyceridae
Four-lined Polycera
Polycera quadrilineata
25 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
Polycera norvegica
Polycera faeroensis
Polycera kernowensis
Humped Ancula Sea SlugAncula gibbosa
Sorcerer's DoridPolycera atra
kelp lace bryozoanMembranipora membranacea
Hairy Sea-matElectra pilosa
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| United States | 4,225 |
|---|---|
| Alaska | 4,225 |
| Netherlands | 242 |
| Zeeland | 241 |
| France | 170 |
| Occitanie | 152 |
| Norway | 78 |
| Viken | 66 |
| United Kingdom | 58 |
| England | 34 |
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 | Polyceridae |
| Genus | Polycera |
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 Four-lined Polycera with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.