Great White Heron (Ardea alba) employs various hunting techniques. The most common is probably a "stand-and-wait" technique. It involves motionless standing and watching for a prey to come at "shooting distance".
The next technique which is also frequently observed is a "slow-wade" technique. It involves slow walking thru the water and intense monitoring for possible prey.
In addition to the previous two techniques, there is also, maybe a bit hectic on the first sight, "jump-and-flutter" technique. The Great White Heron jumps in random directions and flutters with its great wings to scare the fish or other prey. When the fish appears, the heron's deadly "spear" comes into swift action.
All above images were recorded at Slovenian Coast.