Island First Sea Lv 120-150

Marine Fortress

Your First Sea fortress of epic battles and mighty bosses!

Overview

Marine Fortress is a crescent-shaped island in the First Sea, ideal for players leveling from 120 to 150. As you navigate its stone walls, you'll encounter a bustling hub of NPCs and challenging foes.

Located northwest of the Marine Starter Island, this fortress is not only a prime spot for quests but also houses unique items and weapons for purchase, making it a must-visit for advancing pirates.

Explore the fort's large guard towers and central building where the Vice Admiral awaits. With hidden entrances and secret items, Marine Fortress offers both adventure and rewards for those who seek them.

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The raid boss Greybeard spawns every six hours, offering a chance to upgrade the Bisento to Bisento V2!

Inhabitants & Enemies

NPCs and enemies you'll find on Marine Fortress:

InhabitantNotes
Parlus Sells Black Cape and other items
Advanced Weapon Dealer Sells various weapons
Marine Basic enemy
Chief Petty Officer Higher-level enemy
Vice Admiral Boss
Greybeard Raid Boss, level 700

Quests

Quests available at Marine Fortress:

No quests are offered on this island.

Tips

  • Consider siding with the Marines when grinding here to spawn closer to the Vice Admiral.
  • Use the Marine Fortress's geography to your advantage; get Chief Petty Officers stuck near stairs for easy defeat.
  • Keep an eye on the chat for Greybeard's spawn message to seize the opportunity for Bisento upgrades.
๐Ÿ“„ Last updated: June 22, 2026 ๐ŸŽฎ Game: Blox Fruits โœ๏ธ Maintained by NOOB.WIKI