Scattering the ashes you can still have someplace to visit, it’ll just be more generalized. We scattered my grandmother on her favorite mountain to look at coming home, all I need to do if I want to remember is look at Finger Rock. You could use the whole ocean.
If that works for you and others, that’s great! I can only speak for myself and like a little more local traditional place though I have friends ho have scattered their parents ashes in a place special to them.