USGS - Science for a changing world

So, What Kind of Algae Is That?

This Science Feature can be found at: http://www.usgs.gov/blogs/features/usgs_top_story/so-what-kind-of-algae-is-that/
New Online Guide for Diatoms

New Online Guide for Diatoms

A new identification guide provides images and geographic distributions of diatoms, an important group of algae.

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