Answer:
In the Mediterranean sea
Step-by-step explanation:
The water present in the deeper part of the North Atlantic ocean is warm and comprised of high salinity, and abundance in oxygen as well as rich in terms of nutrient ones. On the other hand, the opposite occurs in the southern part of the Atlantic ocean. This warm water is typically found up to a depth of about 1000 meters below the mean sea level.
This Atlantic ocean is directly connected to the Mediterranean sea through the Gibraltar Strait.
Therefore, this mass of water that is comprised of higher salinity and higher temperature that is found at a depth of 1000 meters in the northern part of the Atlantic ocean has been formed in the Mediterranean sea.