Echogram exsample from river Tana Norway
Data recorded with Simrad EY500 split-beam 120khz echo-sounder.
Date 19.08.99 time 04:55 am.

Raw-echogram (left) Simgel echo detection echogram (right) recorded
in Tana Time=04:42:26,Range =23.28m,, Filename=07190340.1U9
PingNr=18462
This exsample is believed to show a salmon moving upstreams at a depth
of 2m. Then running for the surface and jumping in the middle of
the beam.

The fish swiming in the water. (left) Echoes from air-bubles due to the splash from the jumping fish (right)