一種常在水邊徘徊、捕食小型飛蟲的昆蟲。 它擁有巨大的複眼、修長的身形和兩對透明翅膀。既能在空中懸停，也能疾速變向，捕捉並吞食小型昆蟲。
An insect that prowls along the water's edge, hunting flying bugs. It has large compound eyes, a long slender body, and two pairs of transparent wings. It can hover in midair, quickly change direction, and catches small insects to eat.