- Find schooling fish by looking for water ripples and listening to soft splashing sounds (you can hear them at 0:13 on the left channel, that's why I turned around to find the water ripples). - Fly low over the surface and click and hold right mouse button to skim the water. - Release right mouse button when you get the notification. - Alternatively you can poke the water by using left click, when you found schooling fish. Flying low above the water is a bit tricky. I use short taps on spacebar and A and D for direction, but not W.