The short answer to the question is that Subnautica: Below Zero does not have any form of multiplayer. Players don't even need to have an internet connection to play it other than to download updates.

在前作《Subnautica》和《Subnautica: Below Zero》中，玩家们不断请求添加多人模式，甚至有些玩家自主开发并发布多人模式，以便与其他玩家共同探索 ...

Young Cotton Anemones are an item that is only used in two recipes in Subnautica: Below Zero, but despite this, players will end up needing quite a bit of it. That's because this is a basic ...

在前作《Subnautica》和《Subnautica: Below Zero》中，玩家们不断请求添加多人模式，甚至有些玩家自主开发并发布多人模式，以便与其他玩家共同探索 ...

Subnautica: Below Zero is a leaner, meaner standalone expansion to Subnautica that improves on the story and mechanics, but doesn't give us as much room to explore.