I covered the partner sim of this one, Pillars of Hercules, last April. Sea of Hercules is more of an underwater sim, with a dance club, houses for merfolks and so on. There is even an underwater caroussel with seahorses! One drawback is that one of the houses on the sim will give you an ejection notice, which still puzzles me as to why such a public sim would allow that kind of privacy protector at the ground level.
The sim is rated Mature/Moderate