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Epilithic Diatom

Genus: Pinnularia


Diatoms are single celled golden algae that are encased in glass-like shells (frustules) composed mostly of silica that are intricately marked and nearly indestructible. Epilithic diatoms are diatoms that are not defined by their physical characteristics but by their habitat. They attach themselves to rocks that are submerged in both slow and fast moving waters.


Attached to submerged rock along shoreline of man-made lake in SW Pennsylvania. pH level of water was 7.3

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1 Comment

Machi 2 years ago

Your spotting has been nominated for the Spotting of the Week. The winner will be chosen by the Project Noah Rangers based on a combination of factors including: uniqueness of the shot, status of the organism (for example, rare or endangered), quality of the information provided in the habitat and description sections. There is a subjective element, of course; the spotting with the highest number of Ranger votes is chosen. Congratulations on being nominated!

Spotted by

Somerset, Pennsylvania, United States

Spotted on Apr 24, 2016
Submitted on Dec 22, 2016

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