The cohesive behavior is the attraction between the molecules of the same substance and cause the water molecules to be drawn together.
Ability to moderate temperature, due to the multiple hydrogen bonds between the water it has a heat capacity which allows for large bodies of water to absorb heat.
Expansion upon freezing means that it creates a drastic change in the environment and allows it to cool and freeze,
Versatility as a solvent gives it the ability to dissolve compounds and other polar molecules.
Density determines waters vertical position in the ocean using temperature and salinity. Lower temperature waters are more denser than higher temperature waters. Also, low salinity waters are lower density than higher salinity waters
