It has been a tradition for practice within professional studies at university and college during the education for a far time. Although there is much research on what characterizes good practice, there has not been researched enough on how practices can help increase the professional competence of students. By focusing on this, we can get a better understanding of the importance of practice, and how to use the practice in other programs to increase students' competence, when they graduate. This study look at the experiences and learning in practice among students who attend to the integrated master programme in aquamedicine, and how practice contributes to the development of professional competence of these students. This is a qualitative study. The data were collected using a focus group interview with six students who go on integrated master programme in aquamedicine, and who had already completed at least one practice period during their studies. The interview was meant to catch students' experiences from practice, and what kind of learning they experienced. All data got collected with audio recordings, and then transcribed and analyzed into categories that could explain how practice contributed to the development. This study suggests that practice is an important arena for learning, and that the practice has a potential to contribute to the development of professional competence. The study shows that practice is good to acquire practical knowledge, often through firsthand experiences of authentic situations. Students also developed expertise in the procedures and methods, which they considered to be important for future employment. Students also expressed that they through practice had increased understanding and better idea of what it means to be a fish health biologist, and the students experienced the development of transferable skills as critical thinking and work ethic.