The North Sea, Baltic Sea, and Mediterranean Sea are all partially enclosed bodies of water, while the open sea refers to the vast expanse of ocean that is not enclosed by land. The North Sea and Baltic Sea are located in northern Europe and are partially enclosed by surrounding countries, while the Mediterranean Sea is connected to the Atlantic Ocean but is largely enclosed by land. The open sea, on the other hand, refers to the unrestricted ocean waters that are not enclosed by land. **

The wave motion on the North Sea can vary depending on the weather conditions. Generally, the North Sea experiences moderate to rough waves due to its exposure to strong winds and currents. During storms, the waves can become very large and powerful, making navigation and fishing challenging for boats in the area. It is important for sailors and fishermen to be aware of the wave conditions and to take necessary precautions when venturing out onto the North Sea. **

It ultimately depends on personal preference and what one is looking for in a coastal destination. The North Sea is known for its rugged coastline, strong winds, and sandy beaches, making it popular for water sports and outdoor activities. On the other hand, the Baltic Sea offers calmer waters, picturesque fishing villages, and historic towns, making it a more tranquil and relaxing option for those seeking a peaceful seaside retreat. Both seas have their own unique charm and attractions, so the choice between the two would depend on individual preferences. **

No, the Baltic Sea is not a Wadden Sea. The Wadden Sea is a coastal wetland area in the southeastern part of the North Sea, known for its extensive tidal flats and salt marshes. The Baltic Sea, on the other hand, is a brackish sea located in Northern Europe, bordered by several countries including Sweden, Finland, and Germany. While both bodies of water are important coastal ecosystems, they are distinct in their geographical and ecological characteristics. **

No, you cannot feel the motion of the sea in a submarine. Submarines are designed to be stable and minimize the effects of the ocean's motion on the crew inside. The interior of a submarine is isolated from the external environment to provide a smooth and controlled ride for the occupants. **

While some North Sea fish species can tolerate the environmental conditions in the Baltic Sea and vice versa, there are differences in salinity levels, temperature, and other factors that may make it challenging for certain species to thrive in the other sea. Some fish may be able to adapt and survive in the different conditions, but others may struggle or not be able to survive at all. Overall, it depends on the specific species and their ability to adapt to the new environment. **

Hamburg is located on the River Elbe in northern Germany, near the North Sea. **

The Baltic Sea and the North Sea are both located in Northern Europe, but they are distinct bodies of water. The Baltic Sea is a brackish sea, meaning it has a lower salinity than the ocean, and it is surrounded by countries such as Sweden, Finland, Estonia, Latvia, Lithuania, Poland, Germany, and Denmark. The North Sea, on the other hand, is a saltwater sea and is bordered by the United Kingdom, Norway, Denmark, Germany, Belgium, the Netherlands, and France. Both seas are important for shipping, fishing, and tourism in the region. **