how do btteas make bubble nests?

ooopps, i meant how do bettas make bubble nests

the male but sometimes the female, blow bubbles from the atmosphere and they sort of stick together and when its deep enough he will court the female. he has to keep making bubbles as they pop after a wee while.

thats cool, If i were a betta I would just make one gigantic bubble ( save myself the hassle)