Upon realizing that coconuts could be thrown, I threw one, it hit the wall and it's contents spilled out all over my floor:
How can I remove this?
I have tried using the matter manipulator with the fluid upgrade, but I think it doesn't work because there is the teleporter there.
Reloading the game/server doesn't change anything.
This is unfortunately going to be a roundabout solution that requires a little work, but the best way to fix this would be to upgrade your ship.
Based on your screenshot, you've still got the tier 1 space ship, which has the pilot's seat area, a small amount of storage space, and the teleporter. If you upgrade to the second tier, a new room will be added behind the teleporter. Remove the barricade from the new room, and the water should flow in (and probably disappear since it doesn't look like there's enough there to cover the floor of the new room).
To upgrade your ship, you need to either recruit two crew members (by doing quests for NPCs in any town, who will then occasionally decide to join you) or you can buy the "Fake Kestral License" from the Penguin Bay, then bring the license to Pete (far right in the Outpost). It does require a handful of upgrade modules (which are pretty common).
I had a little free time and came up with a solution, it's really simple as you can see all you have to do is remove a background block with the right click, and the coconut oil will drain into space.
This answer does not help in this exact situation because the teleporter is in the way and you cannot put a drain over the teleporter.
What you need to do, is drain it, with a drain !
You can craft at the Wiring Station.
If you don't have access to it, then you can possibly find one in an Apex Test Facility or in any Hylotl Underwater City. The underwater cities are usually easier to find, jut go to an ocean planet, find the underwater city, turn of the generator and then you can pick up a few at the airlock at the far ends of the city. Just make sure to left some otherwise the airlock might malfunction.
