For the first time, processes of the generation, evolution, and destruction of multiturn dynamic spiral domains (SDs) in a highly anisotropic iron garnet film have been studied in the anger state in a low-frequency magnetic field (0.3-6.0 kHz). The geometrical and dynamic parameters of spirals at various stages of their existence have been determined and the dependences of the parameters of SDs on the frequency and amplitude of the magnetic field have been investigated. The behavior of various types of SDs at different stages of their interaction with one another, including the disappearance of some of them, is illustrated.