Oceania's atmosphere is a naturally humid nitrogen-oxygen mixture, suitable for humans. The median ocean depth is only a couple of hundred metres, and the islands are generally surrounded by large expanses of tidal flats. The largest island is just over 30 kilometres across at high tide, but nearly 50 kilometres wide at low tide. It also contains the highest peak on the planet, some 46 metres above high tide level.
Oceania's tides are languid affairs, caused by a medium sized moon orbiting just a little slower than the planet's rotation rate. A complete tidal cycle takes 27 Earth days.
Humans and Larrokites have imported many species from their home worlds, particularly aquatic ones.
Several Larrokite cities exist on tidal flats or partially submerged in the shallows.
With little land area, mining is difficult on Oceania, and many metals and machinery are imported. It is also one of the few planets to buy rock, which is used to build up and extend islands. The price is not high, but if you are headed to Oceania with any otherwise empty cargo space, fill it with rock and you can make a little cash.
Some islands have fallen under the authoritarian rule of a despot from time to time, but coups and revolutions generally see these leaders deposed before they can do any real damage.
For the sake of apparent unity on interstellar councils, Oceanian citizens occasionally elect a few global representatives, but these people speak with very little real authority for their planet. Oceanian delegates have been known to promise one thing, only to have the whims of their planet produce a completely different outcome.
At present there is a strong inter-island political movement endorsing emigration from Oceania, for the sake of the planet's already overcrowded land area. However, leaving one's homeworld is always difficult and few people are going.