David Janka has been doing acoustic biomass surveys with the Prince William Sound Science Center since 2007. This spring during the spawning biomass surveys he covered 713 nautical miles over 13 days on the waters of Prince William Sound. The following are some of our favorite images that he captured on this trip. 

The red dots on this image are anchoring locations. The ziz-zag lines in magenta are the night transects of the acoustic biomass surveys.

Bald eagles near a herring spawning event on April 7. 

Passing by the Serenity jigging for herring for a radio tagging project on April 10.

The usual 150 or so sealions at Bull Head/Glacier Island on April 10. 

A stunning morning in Port Chalmers on April 12.  

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