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A USGS technician conducts a phytoplankton net tow to measure harmful algae and toxins in San Francisco Bay.

By California Water Science Center
Scientist on boat wearing blue pants, green shirt, hat, life jacket, holding white net, with bridge and land in background.
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Detailed Description

A USGS technician conducts a phytoplankton net tow to measure harmful algae and toxins in San Francisco Bay.

Sources/Usage

Public Domain.