Experiment about Ocean Water and Normal Water

On 1st June, 2016 I had an experiment about the salt water and the fresh water. So the data show:

Ocean Water:

. Conductivity: 886 ppm

.PH: around 5.5 to 6

Sink Water:

. Conductivity: 28 ppm

.PH: around 8

So which mean that our ocean now is getting a little acidic, and for my hypothesis is that people produce a a lot of CO2 and it bad for coral reefs.

My self holding the ocean water PH.
My self holding the ocean water PH.
Checking the conductivity of the normal water.
Checking the conductivity of the normal water.
the result
the result
That all the experiment
That all the experiment