If we talk about the living conditions in water and on land, then there are really many differences and they are quite significant. So, one of the main differences can be considered the way of oxygen consumption. There are also some peculiarities in adapting to gravitational influences. Also, photosynthesis in plant organisms has its own characteristics in water and on land. There is also a big difference in the way you move in space. Another important difference is in the breeding method. As you can see, there are a lot of differences and they are very significant.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.