Experimented with some ocean panning shots recently and was quite happy with the outcome. It creates an abstract, silky and smooth blur of your ocean photos.
If you would like to try this, check out the settings (in the photo captions below) and the simple technique to be applied from two websites (link below).
Best results are either at sunset or sunrise time. The below photos were shot some 10 minutes before sunset. Tripod or ND filter is not necessary.
Check out more tips here:
@ Learning Surf Photography (How to slow shutter Line Up Shots):
Abstract Photographs of Cresting Waves: