Symbionts (1 of 3) (IMAGE)

Penn State

Symbionts (1 of 3)

Caption

Corals are able to build large reef structures in many of the worlds shallow tropical environments because they contain symbiotic micro-algae called Symbiodinium (and often referred to as zooxanthellae). Distinct symbiont species which are found in different corals look nearly identical.

Credit

Todd C. LaJeunesse

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