Bubble shapes pop up quite frequently in nature. Why would your alien be blowing bubbles?

Bubble shapes are found in a variety of animals, plants, and fungi, and can be quite intriguing! Frogspawn, for example, consists of clear, jelly-like bubbles that contain developing tadpoles. Pods of humpback whales hunt for fish by creating mesmerizing bubble nets that trap their prey. There are fungi and slime molds that look like bubble gum or little eggs in a tiny bird’s nest. The spittlebug (that’s a real name!) creates a foamy home in your garden plants. On the microscopic scale, bubble-shaped colonies of Volvox Globator swirl around like tiny planets. From giant whales to minuscule microbes, bubbles are a recurrent theme!