Blog post

Uneventful start of HERAS part 2

Published on
July 14, 2011

Week 3 of the 2011 herring acoustic survey turned out to be rather “quiet”.

Large aggregations of fish were absent and on top of that, the weather wasn’t on our side either. Most of the time we had wind forces between 5 and 7.

The planned cruise track in week 3 is indicated in blue on the map:

while it was still rather calm at the start of the transect on Tuesday morning (Scottish coast in the background):

…the winds soon picket up:


On Tuesday (12.7.) evening, we came across a few scattered schools near the seabed:


This was most of the fish we have seen so far until Thursday noon! Trawling on the aggregation revealed 13 sprat, one herring and some groundfish…

To illustrate the sheer emptiness of water we have seen so far, this is the echogram of the whole day yesterday (Wednesday, 13.7.):


There is just nothing there!

Hopefully we will see some fish by the end of tomorrow, when we should reach the end of the transect.