Measurement of the size of moon jellyfish (Aurelia aurita) using acoustic techniques (scientific echosounder)

This study investigates the relationship between the bell diameter of the moon jellyfish (Aurelia aurita) and its target strength (TS) using acoustic survey methods. Conducted in the summer of 2024 in Yeosu coastal waters, South Korea, data were collected using an EK80 acoustic system (200 kHz). The results indicate a proportional relationship between bell diameter and TS values, providing significant insights into the acoustic scattering characteristics of marine organisms. This research contributes to marine resource management and the development of advanced acoustic survey techniques.