Sphaerium

Rarity: Common

The most frequent rarity: most Wikipedia articles become Commons.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Figure

Domain

Nature

Knowledge cost

1

Influence

1

Resistance

3

In collections

Nobody has pulled it yet.

What Wikipedia says

Sphaerium is a genus of very small freshwater clams, aquatic bivalve molluscs in the family Sphaeriidae, known as the fingernail clams. The small clams in this genus are unusual in that many of them, such as Sphaerium corneum, can climb around underwater on aquatic plants, using their long and strong foot.

Excerpt from the Wikipedia article “Sphaerium”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Francisco Welter Schultes, CC BY-SA 2.5, via Wikimedia Commons.