of a kind. in summer most rivers in kamchatka abound in shoals of fish the numbers are recorded by the kamchatka research institute of fisheries and oceanography located near the river estuary and the nature reserve. it's the only river that flows out of lake and carries its waters to the sea of. wild salmon from the pacific ocean swim up. to their spawning grounds. how can they find the way to the report from the sea. to widespread point of view is that the fish itself by magnetic fields and currents how does the fish recognise its native. let's just call it a sense of smell taste of the river. the fish recording station has one single task that is to count the salmon heading for their spawning grounds the scientist method is simple the river is blocked by a dam as soon as a shoal of fish approaches it they pass through special enclosures where they are counted. the margin of error it's ten percent. as a rule three people work here but none stay for a long period at any one time because of the dangerous proximity to the baz. however biologist you catarina is an exception she and her husband have spent their whole lives on the