List the saltiest sea in the Atlantic.

The highest salinity level of all the seas of the Atlantic Ocean is observed in the Mediterranean Sea. This is due to the fact that the Mediterranean is fenced on all sides by land. It contacts with the bulk of the ocean only through the narrow strait of Gibraltar. This situation interferes with the full circulation of water between the sea and the ocean. An important factor is also the fact that the sea has a fairly southern location, it maintains a warm temperature throughout the year and a large volume of water evaporates from it, and salt accumulates.