Ocean Living is a server with the Origins plugin that is a Deep Lukewarm Ocean only world. This means that the world is mostly ocean, although there is some land. The Merling origin is strongly recommended for this server, in fact it's designed specifically for Merlings. Merlings can breathe only when your head is underwater, but have other special abilities such as being able to see better underwater, being able to break blocks normally, swimming faster, and not sinking to the ground underwater. Monuments do spawn in this world, the one at spawn has no more elder guardians but is unlooted. You're encouraged to explore, build houses, do whatever you want. Make sure to do /kit starter when you join to get some free items that will help you tons on your journey.