How is the sea in general in the continents and countries you swim in, especially in America?

Is it clean or dirty, stony or even full of rocks or a sandy beach? Is the sea cold or warm when you first enter? how much salt Tell me about such situations in the seas you have entered. In my country there are the most beautiful beaches along the Black Sea coast. The entrance to the beaches is mostly sand. There are no stones when entering the sea and the feet do not hurt. The salt content is very low. It is even possible to open the eyes while swimming in the Black Sea. however, the Black Sea is such a beautiful and deep and dangerous sea. A large number of drowning cases occur in a year. and many result in death. Again, the beaches of the Marmara and Aegean Seas in my country are not beautiful. The entrances of the sea are stony everywhere. feet hurt. The salt content is high and the eyes are burning. It is very difficult to enjoy the sea on the Marmara and Aegean coasts. I mean, at least that's what the beaches I've seen were. the entrance must be on sandy and more beautiful beaches. I don't know what the Mediterranean coast is like.

How is the sea in general in the continents and countries you swim in, especially in America?
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