Second Sea Puzzle
There are three Seas in Blox Fruits, each having unique islands, quests, NPCs, weapons, and puzzles to discover. However, you can not access every Sea from the get-go. Instead, they are unlocked once you complete certain prerequisites. For example, you must be on level 700 to be eligible to reach the Second Sea in Blox Fruits. Once a player reaches Level 700, the following message will appear:
Congratulations for reaching Level 700!
Ready to go to the next world?
Talk to the Detective at the Prison!
The Second Sea won't unlock automatically upon reaching level 700. For that, you will have to complete the following puzzle.
Step 1 – Speak to the Military Detective
Travel to the Prison and speak with the Military Detective at the entrance.
He will:
Give the player a key.
Ask them to investigate the Frozen Village, believing the suspect is hiding there.
Step 2 – Defeat the Ice Admiral
Travel to the Frozen Village.
Enter the cave beneath the island.
Use the key to unlock the brown door at the back of the cave.
Defeat the Ice Admiral.
Step 3 – Report Back
Return to the Military Detective at the Prison.
After speaking with him, he will reveal that Don Swan has escaped to the Second Sea.
Step 4 – Travel to the Second Sea
Return to the Jungle.
Go to the stone building beside the Blox Fruit Gacha.
Insert the Ancient Relic into the relic-shaped slot beside the stairs.
The hidden door will open, revealing the Saber Expert.
If the player dies after obtaining the relic, they can simply speak to the Rich Man again to receive another one.
Defeat the Saber Expert to obtain the Saber.
Players below Level 200 cannot enter and will receive the message:
"The entrance rejects you. You're not ready yet."