Faster Ocean building,
If you have a bunch of Ocean tiles that need to be built, or more importantly whole areas of ocean. Take the time to make a default Ocean area that you take time making all the painstaking adjustments to. Ensuring the fog works like it should for the water, the waves look good, water depth is ok, some bottom ocean texture, some foliage if needed, etc.
When you create your new area delete the default heightmap, and import from your other area, everything will come into play perfectly.
This greatly speeds up the process, it's one thing to put in a terrain and terraform it, it's another to spend 30 minutes an area to duplicate your work, cause all ocean area's tend to be the same by default, and need lots of the same things, configured. for all the oceans areas. This saves a bunch of time. Also greatly helps keep water position and height the same for all the areas. This can be a bit trickier with ocean as you have two planes to deal with the bottom terrain and the top water, both need to line up exactly to prevent a glitch feeling.
Do note: When you use the import tool, the assets are placed in a Default_Import1 room. You need to change the room's visibility properties for it to show up when seamless linking, or move all assets to Default. Other than that you can take your time from 30 minutes per ocean area to about 2 minutes.