Other animals › Balanidae
Northern Acorn Barnacle
Semibalanus balanoides
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
Pacific Acorn BarnacleBalanus glandula
Beaked BarnacleAustrominius modestus
Fragile BarnacleChthamalus fragilis
Wrinkled BarnacleBalanus crenatus
Thatched BarnacleSemibalanus cariosus
Montagu's Stellate BarnacleChthamalus montagui
Bay BarnacleAmphibalanus improvisus
Little Brown BarnacleChthamalus dalli
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| United States | 21,665 |
|---|---|
| Alaska | 18,732 |
| Canada | 3,521 |
| Maine | 1,939 |
| Nova Scotia | 1,543 |
| Massachusetts | 1,318 |
| Quebec | 1,167 |
| New Brunswick | 498 |
| New York | 339 |
| Newfoundland and Labrador | 287 |
Counts show where people looked, not only where it lives.
Traits
Physical
- ExoskeletonHas a hard external skeletonFrom its classification
Group and habits
- ParasiteDescends from a lineage whose members commonly live parasitically on another organism.From its classification
Classification
| Kingdom | Animals · Animalia |
|---|---|
| Phylum | Arthropods · Arthropoda |
| Class | Barnacles and Copepods · Hexanauplia |
| Order | Symmetrical Sessile Barnacles · Balanomorpha |
| Family | Balanidae |
| Genus | Semibalanus |
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 Northern Acorn Barnacle with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.