Newhall is a newly-terraformed planet with large oceans. Newhall’s people live on small island chains or on floating stations on the oceans. Newhall’s water plants are always in need of workers, hence the Alliance’s generous incentives for settlers who move here.
Those of Newhall who don’t want to work the water plants can make a good living fishing. And there’s always the tourist centers, for those who like to swim and cavort.