Opalinidae

Rarity: Common

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At a glance

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Nature

Knowledge cost

3

Influence

4

Resistance

4

In collections

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What Wikipedia says

The opalines are a small group of peculiar heterokonts, currently assigned to the family Opalinidae, in the order Slopalinida. Their name is derived from the opalescent appearance of these microscopic organisms when illuminated with full sunlight.

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

Image: Weidong Li, Chong Wang, Feng Huang, Ming Li, Frank Nilsen, Huiyu Liu and Jianlong Xu, CC BY 4.0, via Wikimedia Commons.