Kelp Dark
Drifting through a kelp forest near Cape Peninsula, South Africa. A 4K Aerial film built into macOS — Skywall plays it as your wallpaper, on every display, without re-encoding a frame.
- Collection
- Underwater
- Source
- 4K SDR master, built into macOS
- File
- 373 MB
- In System Settings
- Not listed
- Plays on
- The desktop, every display

What the camera passes.
- Drifting through a kelp forest near Cape Peninsula, South Africa
Why the Wallpaper pane hides it.
The Wallpaper pane in System Settings never offers this one, though the system catalogue lists it and the 373 MB master sits on the same servers as the rest. Skywall lists it like any other.
How to set Kelp Dark as your wallpaper.
- Install Skywall and open it from the menu bar.
- Find it under Underwater.
- Click the card. If the film is not on your disk yet, Skywall downloads it from the system’s own content servers into the folder macOS already uses.
- It plays on every display until you pick another one.
The film goes into the system’s own Aerials folder and stays there if you remove the app. Skywall has no servers of its own; nothing is uploaded anywhere.