The study's goal was to see if there is any significant correlation between PHV, anthropometric indices, and motoric ability tests and 25m freestyle swimming. The sample of participants included 15 young male swimmers. Their chronological age was 9.71±0.99 years. Used variables were age, PHV, maturity offset, body height, seating height, body mass, leg length, 25m freestyle swimming, medicine ball throw, sit-ups, and 20m sprint run. Results showed significant differences in medicine ball throw compared to body height; taller kids threw the ball further. Sit-ups compared with body mass; kids with lower body mass did more sit-ups. 20m sprint compared by age, older kids run faster. PHV compared with age and body height, and Maturity offset compared by age and body height; if the kid is older or taller it has reached a bigger maturity offset and PHV. Body height, body mass, and age are very important at a young age and can make a big difference in a young swimmer’s performance. Coordination, strength, and speed at ages 8 to 11 have in progressed linear growth. Also, in swimming, there is something called “the feeling for the water” - the more time you spend consistently in the water your coordination adapts efficiently. Bigger differences in the results can be explained by sensible phases of child motor development. We didn't see a significant change in any variables connected with the 25m swim, kids start to develop motor skills on the ground and at an early age. New media such as water takes a different set of motor skills to be used/developed. This means that younger kids can have better results if they have more training experience than their older colleagues because their specific coordination, strength, and speed are used more efficiently in water.