Cnidaria

Rarity: Rare

A topic known well beyond its field, found in many languages.

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

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Knowledge cost

6

Influence

12

Resistance

9

In collections

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What Wikipedia says

Cnidaria ( nih-DAIR-ee-ə, ny-) is a phylum of animals containing over 11,000 species of aquatic invertebrates found both in freshwater and marine environments (predominantly the latter), including jellyfish, hydroids, sea anemones, corals and some of the smallest marine parasites.

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

Image: Matthias Jacob Schleiden (1804-1881), Public domain, via Wikimedia Commons.