Core Keeper: The Sunken Sea Biome Guide

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Where is The Sunken Sea Biome in Core Keeper?
The Sunken Sea Biome is located beyond either The Clay Caves biome or The Forgotten Ruins biome, depending on where it spawns in your world.The entrance to this biome is guarded by a wall that will only open if Glurch, Ghorm, and Hive Mother are defeated beforehand and you have collected all the parts to activate the Core, which allows for passage.
Sunken Sea Biome. As the name suggests, the Sunken Sea Biome is practically a field of water. To be able to traverse this biome most efficiently, it is recommended that you craft a Boat before venturing in— or at least bring a few hundred Bridges to create ways.
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The Sunken Sea Biome Plants
While exploring The Sunken Sea Biome, you can find the following plants:| Item | Description |
|---|---|
| Pewpaya | Notable Loot in The Sunken Sea Biome |
| Pinegrapple | Notable Loot in The Sunken Sea Biome |
| Topaz Ring (Uncommon) | +23% mining damage |
| Turtle Shell (Epic) | +32 armour+9% reduced damage taken from bosses |
Where to Find Octarine in Core Keeper
Octarine, a valuable resource in Core Keeper, can be found throughout The Sunken Sea Biome.
Enemies in The Sunken Sea Biome
The Sunken Sea Biome is home to a variety of unique enemies, each presenting distinct challenges:| Creature | Description |
|---|---|
| Bubble Crab | A large crab firing bubbles, which, when in contact, give the "Slippery" debuff. |
| Slippery Slime Blob | A blue Slime that, most of the time, inflicts the "Slippery" debuff when it hits you in melee combat. |
| Tentacle | A water creature attacking from afar, much alike the Mold Tentacle located in The Mould Dungeon, firing projectiles. |
Bosses in The Sunken Sea Biome
The Sunken Sea Biome features two powerful bosses:| Area | Description |
|---|---|
| Omoroth, the Sea Titan | Secret Area in The Sunken Sea Biome |
| Morpha, the Aquatic Mass | Secret Area in The Sunken Sea Biome |
| Turtle Island | This island contains a giant turtle statue with buried treasure underneath. You can find the Turtle Shell here.</td> |
| Fisher Man's Island | A tiny island with a few fishing racks, upon which fish are spread out drying, and a chest filled with fishing equipment.</td> |

How do I access The Sunken Sea Biome in Core Keeper?
In order to gain access to The Sunken Sea Biome, you have to defeat the Glurch, Ghorm, and the Hive Mother. Their necessary pieces are used to activate the Core to do away with the wall in your path to this biome.
What should I bring when exploring The Sunken Sea Biome?
A crafted Boat is very helpful in early exploration since most of the biome is covered in water. You can also take with you several hundred Bridges to build paths over the water.
What are the main threats to the Sunken Sea Biome?
Major threats are the Bubble Crab, which inflicts the "Slippery" debuff, and the Tentacle, which throws projectiles from a distance and makes combat tactics and navigation a little bit harder.
Where can I find Octarine in Core Keeper?
Octarine can be found in The Sunken Sea Biome. Go on further journeys around the zone to gather this extremely precious resource.