The Second Sea is the high-level region of Grand Piece Online (GPO) — the Roblox game inspired by the One Piece anime and manga series. Reaching the Second Sea is a major milestone that requires hitting Level 325 and completing the World Scroll quest, and it opens up a much larger, more challenging map with islands based on iconic One Piece locations including Alabasta (Desert Kingdom), Thriller Bark, Impel Down, Dressrosa (Rose Kingdom), and Whole Cake Island.
This guide covers the complete GPO Second Sea map — every island, their level requirements, notable NPCs, bosses, purchasable items, and navigation directions from the spawn point at Rovo Island.
How to Unlock the Second Sea in GPO
Before you can access the GPO Map Second Sea, you need to meet two requirements:
- Reach Level 325 — the minimum level requirement to enter the Second Sea
- Obtain the World Scroll — found at the ???? Shrine located North-West of Marine Base G-1 in the First Sea. The scroll respawns every 10–15 minutes if someone else has taken it.
Once you have both, head to Reverse Mountain located directly west of Sphinx Island. Give the World Scroll to the giant monkey guardian at Reverse Mountain to unlock access. You will be transported to Rovo Island, the Second Sea’s spawn location — your spawn point is automatically set there on arrival.
Important: The Second Sea runs on a completely separate Roblox server from the First Sea. Your First Sea Eternal Poses will no longer work in the Second Sea. You will need to acquire new Eternal Poses for each island you want to return to.
GPO Second Sea Map: All Islands at a Glance
| Island | Level | Key Bosses / NPCs | Notable Features |
| Rovo Island | 325 | None (spawn island) | Starting point; shops; basic supplies |
| Fishman Island | 325–375 | Vander Decken, Fukaboshi | Early grinding; underwater environment |
| Sashi Island | 330 | None (peaceful) | Busoshoku V2 Trainer (Raytona) |
| Desert Kingdom (Alabasta) | 325 | Pharaoh Akshan | Large desert island; Karoo mount; shops |
| Kori Island | 350 | None (peaceful) | 2 Sword Style Trainer (Musashi) |
| Spirit Island | 360 | None (peaceful) | Dragon Claw Trainer (Vrael) |
| Thriller Bark | 375–425 | Ryuma, Borj, Moria | Spooky island; Vampire Trainer (Blood Queen) |
| Marine Base G-1 | 400 | Admiral Zeke, Captain Zhen | Marine faction HQ; powerful bosses |
| Rough Waters (Second Sea) | 400+ | Sea Beasts | Sea beast farming; rare drops |
| Impel Down | 450+ | Multiple raid bosses | Impel Down Raid dungeon |
| Rose Kingdom (Dressrosa) | 500+ | Multiple bosses; Werewolves | Best grinding zone; main story content |
| Whole Cake Island | 675 | Big Mama, Mochi Emperor, Juice Emperor | Whole Cake Tower dungeon; Big Mama event |
| Transylvania | Seasonal | Seasonal bosses | Halloween event island |
GPO Second Sea Islands: Detailed Guide
Rovo Island — Second Sea Spawn
Level Requirement: 325 | Type: Town / Hub
Rovo Island is where every player spawns when they first enter the Second Sea. It is a large island packed with shops and NPCs offering the basic supplies needed to start progressing through the Second Sea. This is where you buy your new Eternal Pose, stock up on potions, and get oriented with the Second Sea layout.
- Key purchases: Rovo Island Eternal Pose, potions, upgrade materials
- Direction tip: Rovo Island is your anchor point — learn its location relative to other islands using the compass
Fishman Island — Early Second Sea Grinding
Level Requirement: 325–375 | Bosses: Vander Decken, Fukaboshi
Fishman Island is one of the first proper grinding islands in the Second Sea — a fully underwater environment based on the Fishman Island arc from One Piece. The island features quests against Fishman enemies and two notable bosses: Vander Decken and Fukaboshi. It is a popular grinding spot for players fresh into the Second Sea at the 325–375 level range before moving on to Thriller Bark.
- Bosses: Vander Decken (drops Vander Decken’s Axe), Fukaboshi
- Best for: Early Second Sea leveling; transitioning from Level 325
Sashi Island — Busoshoku V2 Trainer
Level Requirement: 330 | Type: Peaceful / Trainer Island
Sashi Island is a small peaceful island located south of Alabasta (Desert Kingdom). Its primary purpose is housing Raytona, the Busoshoku V2 (advanced Armament Haki) trainer. If you want to unlock the second tier of Busoshoku Haki, this is where you come. There are no enemies or quests here beyond the trainer interaction.
- NPC: Raytona — Busoshoku Haki V2 Trainer
Desert Kingdom (Alabasta) — Large Desert Hub
Level Requirement: 325 | Boss: Pharaoh Akshan
Desert Kingdom is the Second Sea’s version of Alabasta from the One Piece Alabasta arc — a vast desert island with multiple towns and settlements. It is the largest island in the early Second Sea and features the Pharaoh Akshan boss, as well as a Karoo Mount purchasable for Robux that lets you travel around the island faster (Karoo food costs 5,000 Bells per 10 pieces).
The Desert Kingdom Eternal Pose costs 3,000 Bells and is an essential purchase for players who plan to return to the island regularly. Grinding here is not especially recommended compared to other Second Sea locations — the quests are longer and harder relative to the XP reward. It’s better used as a hub for item purchases and the Pharaoh boss.
- Boss: Pharaoh Akshan
- Purchasables: Desert Kingdom Eternal Pose (3,000 Bells), Karoo Mount (Robux), food
- NPCs: Bomi and Robo near docks, Kingdom Guards, Civilians
Kori Island — 2 Sword Style Trainer
Level Requirement: 350 | Type: Peaceful / Trainer Island
Kori Island is a cold, peaceful island that is home to Musashi, the 2 Sword Style Fighting trainer. Players who want to unlock and upgrade the 2 Sword Style fighting ability need to visit Musashi here. The island also features a mini game that most players find less engaging than other content.
- NPC: Musashi — 2 Sword Style Trainer
Spirit Island — Dragon Claw Trainer
Level Requirement: 360 | Type: Peaceful / Trainer Island
Spirit Island is a peaceful island housing Vrael, the Dragon Claw Trainer. Dragon Claw is a Rokushiki-based fighting technique, and Vrael is the only trainer for this ability in the Second Sea. Players pursuing a Rokushiki or dragon claw build need to visit here to unlock and upgrade the ability.
- NPC: Vrael — Dragon Claw Trainer
Thriller Bark — Best Early-Mid Second Sea Grinding
Level Requirement: 375–425 | Bosses: Ryuma, Borj, Moria
Thriller Bark is one of the most iconic and popular islands in the GPO Second Sea — a spooky gothic island directly based on Thriller Bark from the One Piece Thriller Bark arc. It features three bosses (Ryuma, Borj, and Moria) and is a very popular grinding location for players in the 375–425 level range.
Thriller Bark is also home to Blood Queen, the Vampire Fighting Style trainer — one of the most distinctive fighting styles in GPO, which can only be unlocked here. The island’s dark atmosphere, multiple boss options, and solid XP-per-quest rate make it one of the most visited islands in the entire Second Sea.
- Bosses: Ryuma (katana drops), Borj, Moria (rare drops)
- Trainer: Blood Queen — Vampire Fighting Style
- Best for: Grinding levels 375–425; farming boss drops; unlocking Vampire fighting
- Navigation: Sail North-East from Rovo Island to Sushi Island, then directly East to Thriller Bark
Marine Base G-1 — Second Sea Marine HQ
Level Requirement: 400 | Bosses: Admiral Zeke, Captain Zhen
Marine Base G-1 is the primary Marine faction base in the Second Sea — home to two of the most powerful standard bosses in the game: Admiral Zeke and Captain Zhen. The NPCs here use Burn Bazookas and the base is aggressively hostile to pirate-aligned players. It is a challenging but rewarding location for high-level players seeking strong boss drops.
- Bosses: Admiral Zeke, Captain Zhen
- Note: Hostile NPC burn bazooka users make this island dangerous to navigate carelessly
Rough Waters (Second Sea) — Sea Beast Farming
Level Requirement: 400+ | Type: Open Water / Sea Beast Zone
The Rough Waters in the Second Sea are an open water zone located North-West of Marine Base G-1. Unlike the islands, this area is entirely open ocean where players can farm Sea Beasts for valuable drops. Sea Beast encounters here are guaranteed — sailing into Rough Waters will trigger a sea beast fight. This is the primary location for farming Sea Beast drops.
- Notable drops: Sea Serpent’s Core (1%), Slayer’s Armor Set (1%), Seabeast Katana (5%), Slayer’s Mask (1%), Random Fruit (3%)
- Navigation: North-West of Marine Base G-1
Impel Down — The Raid Dungeon
Level Requirement: 450+ | Type: Raid Dungeon
Impel Down is a massive fortified prison island directly inspired by the Impel Down arc from One Piece. The defining feature is the Impel Down Raid — a high-stakes dungeon where players start as prisoners, must escape their cuffs, and battle through the multiple levels of the prison to reach the end rewards. The Raid requires a capable group of players and offers some of the best rewards in the Second Sea.
The island is surrounded by a massive defensive wall and requires navigating from Thriller Bark (sail North-West from Thriller Bark to reach Impel Down after first reaching Thriller Bark from Rovo Island).
- Key content: Impel Down Raid dungeon — multiple boss floors
- Navigation: From Rovo Island → North-East to Sushi Island → East to Thriller Bark → North-West to Impel Down
- Best for: Group raid content; end-game drops
Rose Kingdom (Dressrosa) — Best Grinding Zone in Second Sea
Level Requirement: 500+ | Type: Main Story / Best Grinding
Rose Kingdom (Dressrosa) is the most important grinding destination in the Second Sea — located at the far North end of the Second Sea map and based on Dressrosa from the One Piece Dressrosa arc. It was added in GPO Update 8 and contains the best quests for leveling in the entire game, particularly the Werewolf quests which are widely cited as the most efficient XP grind available.
Dressrosa is where most high-level players spend the majority of their time grinding levels, completing quests, and farming boss drops. The Rose Kingdom has its own sub-map with multiple districts and locations, all within the Second Sea server.
- Best grinding: Werewolf quests — best XP rate in the game
- Location: Far North end of the Second Sea map
- Type: Same server as Second Sea; accessible by sailing North from Rovo Island
Whole Cake Island — End-Game Second Sea Content
Level Requirement: 675 | Bosses: Big Mama, Mochi Emperor, Juice Emperor
Whole Cake Island is the highest-level content in the current GPO Second Sea, accessible only at Level 675+. It is based on the Whole Cake Island arc from One Piece’s Big Mom arc and features the most complex content structure in the game — the Whole Cake Tower, a five-floor dungeon with puzzles and boss fights leading to the Mirror World where you can battle the Mochi Emperor.
The Chocolate Marshmallow mini-game is a server-wide event on Whole Cake Island — players collect Marshmallows from the chocolate river and stack them on the Chocolate Fountain. When enough are stacked, Big Mama eats them and distributes rewards to participating players. There is a 15-minute cooldown between events.
- Boss: Big Mama (event boss), Mochi Emperor (Tower final boss), Juice Emperor
- Content: Whole Cake Tower (5 floors + Mirror World), Marshmallow Mini-game, cake-building puzzles
- Level requirement: 675 — the highest level-gated location in current Second Sea
- Navigation: South-West from Rovo Island for 30–40 seconds — between Reverse Mountain and Rough Waters
- Recommended: Bring friends for the Tower Raid; Mochi, Pika, and Buddha fruits recommended
GPO Second Sea Map: Navigation Tips
The Second Sea is a separate Roblox server from the First Sea with its own compass layout. Understanding navigation from the spawn point at Rovo Island makes finding each island much faster.
| Island | Direction from Rovo Island | Notes |
| Whole Cake Island | South-West (30–40 seconds sailing) | Hard to miss — it’s a large island |
| Desert Kingdom (Alabasta) | South | Large island; easy to spot |
| Sashi Island | South (past Alabasta) | Small island south of Alabasta |
| Fishman Island | Underwater; accessible from the main sea | Dive down in the appropriate area |
| Thriller Bark | North-East to Sushi Island → East | First sail to Sushi Island as waypoint |
| Impel Down | North-East to Sushi → East to TB → NW | Three-hop navigation from Rovo |
| Marine Base G-1 | East / North-East | Large base; visible from distance |
| Rose Kingdom (Dressrosa) | North (far) | At the far end of the map; sail North |
GPO Second Sea: Important Notes for New Arrivals
- New Eternal Poses required: First Sea Eternal Poses do not work in the Second Sea. Buy new poses for each island you want to fast-travel back to.
- New World server: The Second Sea runs on a completely separate server. You cannot interact with First Sea players or access First Sea content from the Second Sea.
- Level 325 is the entry point — but many islands have higher recommended levels. Do not rush to Thriller Bark or Impel Down before your level is appropriate.
- Fishman Island first: Most players recommend Fishman Island as the first proper grinding spot after arriving at Rovo Island, before moving to Thriller Bark at 375+.
- Group content: Impel Down Raid and Whole Cake Tower are significantly easier with a group. Solo completion of the Tower is possible but very difficult.
- Dressrosa for max leveling: Once you reach the level requirement for Rose Kingdom, the Werewolf quests there are the most efficient leveling grind in the game — most veteran players spend the bulk of their high-level time here.
GPO Second Sea Map Updates (Update History)
| Update | Key Addition | Second Sea Content Added |
| Update 5 | Second Sea launch | Rovo Island, Alabasta, Fishman Island, Thriller Bark, Marine Base G-1 core content |
| Update 8 | Rose Kingdom | Dressrosa / Rose Kingdom added — major grinding destination |
| Update 9 | Impel Down Raid | Impel Down island and Raid dungeon added |
| Update 10 | Whole Cake Island | Whole Cake Island, Big Mama, Mochi Emperor, Tower dungeon added at Level 675 |
Frequently Asked Questions
How do I get to the Second Sea in GPO?
To reach the Second Sea, you need to be at least Level 325 and obtain the World Scroll. The World Scroll is found at the ???? Shrine North-West of Marine Base G-1 in the First Sea (respawns every 10–15 minutes). Once you have the scroll, sail West of Sphinx Island to Reverse Mountain and give the scroll to the monkey guardian. You will be transported to Rovo Island, the Second Sea spawn location.
What is the best island to grind in the GPO Second Sea?
For players at Level 375–425, Thriller Bark is the most popular grinding destination with multiple bosses and solid XP rates. For players at Level 500+, Rose Kingdom (Dressrosa) — specifically the Werewolf quests — is universally cited as the best XP grind in the entire game. Whole Cake Island at Level 675+ offers the most challenging and rewarding end-game content.
Where is Thriller Bark in the GPO Second Sea?
From Rovo Island, sail North-East to reach Sushi Island as a waypoint, then continue directly East from Sushi Island to reach Thriller Bark. It is a spooky, dark island with gothic architecture — easy to recognize visually. Thriller Bark is home to bosses Ryuma, Borj, and Moria, as well as Blood Queen the Vampire Fighting Style trainer.
Where is Impel Down in the GPO Second Sea?
Impel Down is reached via a three-hop navigation: from Rovo Island sail North-East to Sushi Island, then East to Thriller Bark, then North-West from Thriller Bark to reach Impel Down. It is a large fortified prison island surrounded by a defensive wall. The Impel Down Raid entrance is in the central area of the island.
Where is Whole Cake Island in GPO?
Whole Cake Island is located South-West of Rovo Island — sail in the South-West direction for approximately 30–40 seconds. It sits between the Reverse Mountain and the Rough Waters area. The island is large and visually distinct, so it is difficult to miss while sailing in the correct direction. The level requirement for Whole Cake Island content is 675.
Where is Dressrosa (Rose Kingdom) in the GPO Second Sea?
Rose Kingdom (Dressrosa) is located at the far North end of the Second Sea map. Sail North from Rovo Island for an extended period to reach it. It is within the same server as the Second Sea — not a separate server. It was added in GPO Update 8 and contains the best grinding quests in the game, particularly the Werewolf quests for XP farming.
Final Thoughts
The GPO Second Sea map covers a wide range of One Piece-inspired locations across multiple updates — from the early Rovo Island and Fishman Island grind through the popular Thriller Bark zone, into the challenging Impel Down Raid, the best-XP Rose Kingdom (Dressrosa), and the current end-game content at Whole Cake Island. Understanding the map layout and navigation from Rovo Island is the key to efficient progression.
New players arriving at the Second Sea should prioritize getting their new Eternal Poses, starting at Fishman Island, and progressing toward Thriller Bark as their level approaches 375. High-level players should make Rose Kingdom their primary grinding destination and work toward the Whole Cake Tower dungeon for the most challenging and rewarding content currently available in GPO.
