The fishnet appearance represents the connection with the Mediterranean Sea.
Olive leaves represent strength, resilience, and perseverance. The olive tree is nearly synonymous with THE LAND, SPIRIT, HERITAGE and CULTURE.
In Numbers 15:38-40 The Most High commands Israel to put fringes (tsiytsiy in Hebrew) on the corner of their clothes so that they will remember to do the commands of the Torah. As the Hebrew mind focuses on the concrete, The Most High uses physical things as reminders and associations for non-physical things.