Little bug crawling inside the leaves!

I just noticed in a couple of leaves, this trail like marking and a very small larvae like thing inside trapped between the top and bottom of the leave.

Does anyone know what that is? Should I take a pic?

Ya post a pic dude...

pictures speak a thousand words you only spoke a few

here it goes...on this one, after i took the pic, I removed this leaf but the little crawly was not inside!

i saw a tv show on a bug that does that. they stay inside and eat the leafs insides and also use the leaf a protection. it will move leaf to leaf until it eats them all and reproduces successfully. but im not a professional so dont trust me

kill that f#&ker

I don't know what it is but, I say cut off the leaves that have it, and see what happens. It wouldn't hurt to get an Organic Insecticide either. Good luck.

Looks like "Leaf Miner" damage to me.