The natural world is diverse, which the author of many books for children, Doctor of Biological Sciences Nikolai Nikolaevich Plavilshchikov, knew and loved so well. In this book, a scientist-entomologist talks about how interesting it is to observe the life and habits of insects living next to you: the trumpet bug, the elephant bug, the diving beetle, the firefly and other inhabitants of this huge world of wildlife. A birch tree grows at the edge of the forest. Some of its leaves are rolled up like paper pounds. They are not glued together or stitched, as if they are holding together by themselves. It turns out that this is the work of a small black bug, a pipe-roller. The guys found a wormy nut with a small hole in the shell in the forest. Thick, durable walls seem to have been drilled with a metal drill. This was done by a small elephant bug with its “nose”. The swimming beetle overwinters at the bottom of the pond. He cannot do without air and still breathes. It turns out that the diving beetle gets oxygen for breathing... from the water. Why do snorkelers make pounders? How do elephants drill into nut shells? How does a diving beetle breathe underwater? Why do fireflies glow? You will learn about all this, as well as many other amazing insects, from the book by Professor N. N. Plavilshchikov. For primary school age.