How do diving beetles create the air bubble?

Some use small hairs that cover their bodies to trap air while under the water; the hairs are so close together that when the beetle submerges, water cannot reach through, and air therefore becomes trapped between these hairs. read more

The above video from KQED’s Deep Look YouTube channel shows how predaceous diving beetles literally take air with them when they go underwater. Harnessing surface tension, the beetles are able to cart air bubbles like a SCUBA tank. read more

Adults carry air under the wing covers, and often have a small bubble of air attached to the back of their abdomen. This Diving Beetle has water bubbles sticking to it Adults come out of the water at night and fly around. read more