Make your own fiber optic cable for your underwater flash - works with S&S YS-D2 flash
This is a DIY video about building your custom lenght fiber cabel to your flash. This cabel also work with the nauticam flash trigger. Nauticam tells on their site that the Sea & Sea YS-D2 is not compatible with their trigger. Here is a work around.

Hopefully nauticam and Sea & Sea send me a thanks :)

Link to Ebay for the optic cable