Four turn water knot
The water knot is used by anglers to join two pieces of line together, commonly hook link and main line. It can be used on any two lengths of line but doesn’t work as well on thicker lines. For joining thicker lines use the Double Uni Knot.
How to tie
Hold the two lines parallel.
Form a large loop with the two lines.
Keeping the lines together, thread the two ends from one side through the loop four times.
Wet the knot with water or saliva to help the line slide and tighten down.
Pull on the line and tail on each side of the knot to fully tighten.
Cut off the tail ends leaving a short tag.