Northwest Fisheries Science Center

The Main Deck

Acoustic and trawl adventures in the Northeast Pacific

This portal tracks the research and sea-going activities of the Fisheries Engineering and Acoustic Technologies (FEAT) Team from NOAA¿s Northwest Fisheries Science Center.  Follow us as we use acoustics, trawling, and oceanographic sampling to learn about the Northeast Pacific Ocean.

Back deck of Bell M. Shimada
Acoustic echogram of hake
trawl catch

Secret Messages?

By Sandy Parker-Stetter
February 2, 2016

Fish can appear in all kinds of crazy patterns on our echosounders. They can be big, round schools that disappear quickly from view, or they can be thin little layers that go on for miles. But, during the winter survey we’ve gotten the sense that our Pacific hake are trying to tell us something. The other morning, this showed up:

Image credit NWFSC/FRAM/FEAT and Pacific hake

What does “E” mean? 

A few hours later, we saw this:

Image credit NWFSC/FRAM/FEAT and Pacific hake

A couple of people saw “I M,” but a few (who had been up all night) saw “H M.”

Ok, so we have an “E” and an “M” plus either an “I” or an “H” – what are the hake trying to say?  Maybe it was to help us with identifying them and it was part of the phrase “I’M HAKE”?  Or, maybe we’ve just been watching the acoustics at sea too long…

Tagged: Winter hake survey

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