Definition

Relating to organisms that live buried in the sediment of the ocean floor or other bodies of water.

Example

The infaunal species play a crucial role in the ecosystem by aerating the sediment.

Conversation

Did you know that some creatures are classified as infaunal?

Really? What does that mean exactly?

It means they live buried in the sand or mud, not just on the surface.

That’s fascinating! I guess they have a whole different way of life.

Synonyms & Antonyms

Root Explanation

Infaunal is formed from "in-" (meaning in or within) and "fauna" (from Latin "fauna", meaning animal life). The term refers to organisms that live within the substrate of a body of water, indicating their existence in the sediment or soil.

Memory Tip

Think of creatures that live 'within' ('in-') the 'animal life' ('fauna') of the ocean floor — that's what infaunal means.

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