"I can tie lots of cool knots..." XD
... You just wanted to show off all of yer world-building sketches and thinkings here, didn't ye?
I rummaged though my sketchbooks and used all the drawings of weird pond creatures I could find, then scanned and flipped one my son's calculus homework pages , I made it nice and indecipherable, then scanned and pasted some sketches I did of knots from a old Spanish sailing ship we visited. This page was easy!
...I was thinking, actually, of diatoms and fortune cookies...