The Sea God Island, also known as Devil Island to outsiders, is an island separate from the Douluo Continent but in close proximity. The Sea God Island is the heart of the seas and the capital of the islands scattered throughout the seas. Within the Sea God Island is the Sea God Mountain and the surrounding guardian seven Sacred Pillars. On the mountain is the Sea God Temple, where the Priestess and the Sea God Trident reside.
The resident population numbers during the era of Tang San at around 2,000 with all of them being Spirit Masters. The basic guards are called the Sea God Fighters, Spirit Masters under the retirement age of seventy. The islanders are said to be extremely powerful and unmatched in the seas. The residents worship the Sea God. On the behalf of Sea God, the Sea God Island’s head, the Sea God Douluo or the Priestess, manages everything about this place. There are a total of 1008 assessment sites for the Sea God Trials.