Balance in the general sense implies the balance of the body, that is, the ability of the body to remain in a state of rest or movement. Considering this, the basic division of balance is static and dynamic. A review of the literature shows a lack of research dealing with specific equilibrium on unstable water surfaces. In this study, we conducted research on 28 students of the Faculty of Kinesiology Split, with the aim of examining the construction and validation of newly constructed tests for assessing dynamic balance on the aquabalance board. Two tests consisted of a jumping structure (SCISSOR TEST, JUMP TEST), and the remaining two consisted of a walking structure (CIRCLE TEST, SKIP TEST). In addition to all of this, we also performed basic tests for assessing static and dynamic balance on the BIODEX platform (PS, LST). We processed the data with statistical analysis and thus calculated descriptive statistics, examined the normality of the distribution for test sensitivity, correlations between newly constructed tests and reliability coefficients, test homogeneity and correlations of the best test results with basic tests on the BIODEX PLATFORM for practical validity. The testing resulted in high and positive correlations with the basic test for dynamic balance on the BIODEX platform.