Wind
As waves approach the shore, interaction with the sea floor slows the waves down and the crests of the waves bunch up. They increase in height as the energy in each wave compresses into a shorter horizontal distance, but the period of the wave does not change. Eventually, the waves break.
Along cold water currents from the poles to the equator.
Mr poppins is coming
Conductivity can be used to calculate the salinity of the water.
Meander
As water is cooled its density increases until it reaches about 4 C and then it decreases.
spring
The top layer of the ocean is the warmest because it is always in contact with the sun.
Neap tide