This type of water has a very low salt content when compared to the ocean.

Freshwater

Explanation:

Freshwater is usually defined as those water bodies that are comprised of relatively very less amount of salt content. This includes rivers, lakes, and ponds. The amount of salt present in these water bodies is less than 1%, thereby providing the water on which the living beings are dependent on. It is comprised of less than 500 ppm of dissolved salts. These water bodies support a large number of aquatic animals.

Whereas, the ocean water body is comprised of high salinity.

Thus, the freshwater bodies contain low very salinity compared to the ocean water body.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.