Black Desert Online is a sandbox-oriented MMORPG that is developed by Korean video game developer Pearl Abyss and published by Kakao Games. The game was in development for quite a while, and was eventually released in early 2016. Today, it has been announced announced that The Margoria Expansion, is now available to Black Desert Online players.
The Margoria Expansion is going to be focused on the ocean. The seas are full of various treasures but also filled with many monsters that can be fought against. This new expansion introduces a couple of new features such as underwater monster hunting, ship construction, amongst some others. Besides that, more than a 100 story-driven and often dangerous quests are coming as well. Also coming along all of this is the new guild vs guild naval-combat that will fill the ocean up with wrecked ships and floating bodies. This type of combat will decide on which guild is going to establish dominance across all of the new trade routes. The Black Desert team have made a trailer that showcases some action on the water as well as a few of the sea creatures that we will be seeing in the ocean.
This is kind of related to the recent update to ocean systems that happened a couple of months ago called the Ocean Update. The Ocean update was made in order to help prepare the new features coming with the new expansion. If you missed that, the Black Desert team made a video on it in which players can see all of the beautiful new particles and models that were implemented.