WTF Fun Fact – Why Hexagon Honeycombs?

The holes in honeycombs start as circular tubes staggered with one another. The heat formed by the activity of the bees then softens the wax, which connects the gaps between the holes. Finally, the wax hardens into the the most energy efficient shape, the hexagon. – WTF Fun Facts

Source: https://www.discovermagazine.com/planet-earth/scientists-explain-the-amazing-process-by-which-bees-make-hexagonal-honeycombs