Diel vertical migration

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Science and technology

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What Wikipedia says

Diel vertical migration (DVM), also known as diurnal vertical migration, is a pattern of movement used by some organisms, such as copepods, living in the ocean and in lakes. The adjective "diel" (IPA: , ) comes from Latin: diēs, lit. 'day', and refers to a 24-hour period.

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

Image: NASA, Public domain, via Wikimedia Commons.