Second Sea is the intermediate sea in Blox Fruits, accessible after players complete the Military Detective's Quest in the First Sea.

This sea marks a significant jump in difficulty, introducing stronger enemies, better rewards, more complex islands, and advanced progression systems such as raids, trading, and tougher bosses. It serves as the bridge between the beginner-friendly First Sea and the endgame-focused Third Sea.

How to Access:

• To access the Second Sea, the player must be Level 700 or higher.

• Talk to the Military Detective to receive a special key.

• Go to Frozen Village and enter the cave where the Ability Teacher is located.

• Use the key to open the wooden door inside the cave.

• Defeat Ice Admiral inside the cave.

• Return to the Military Detective after defeating the boss.

• Then talk to the Experienced Captain on the left side of Middle Town.

• The Experienced Captain will transport the player to the Second Sea.
  

Overview:

After completing the Military Detective's Quest, players are teleported to the docks of Kingdom of Rose in the Second Sea. These docks contain several important NPCs, including the Blox Fruit Dealer and Set Home Point, and are located close to the first two leveling areas.

The Second Sea is still relatively safe, but it is significantly more dangerous than the First Sea. Enemies deal much higher damage and use more threatening abilities, while Aura becomes much more common across islands, making Elemental fruits less effective. Bounty hunting also becomes more frequent, though it is usually less of a threat outside Kingdom of Rose.

The design of the Second Sea is still fairly simple, but it is visually much more refined than the First Sea. Buildings with interiors are better decorated, and islands are generally larger and more complex. Although there are fewer islands overall, their scale is much greater, with Kingdom of Rose being the largest island in the entire game.

The Second Sea also introduces Fragments, a new currency obtained through various activities. Players can spend Fragments on items and services such as Race Rerolls, Stat Resets, Lantern, Fighting Styles, Kabucha, Microchip, and Blox Fruit Awakenings after successfully completing the corresponding Raid.

Additional Information:

• The player can skip returning to the Military Detective, as access to the Second Sea is already unlocked after defeating Ice Admiral.

• Awakened Buddha is one of the best fruits for grinding in the Second Sea due to its large M1 range and high damage reduction.