In Grounded, the Sunken Bone item can be used as a Tier 2 crafting item once you find it to make powerful Melee weapons like the Rusty Spear, Bone Dagger, Bone Trident, and other tools. The Koi Scale Armor set also uses this material, which includes the Bubble Helmet. Those looking to have more Oxygen while submerged underwater will want the Sunken Bone resource to make these practical items.
As its name implies, the Sunken Bone is found in the dark and treacherous underwater biome known as the Pond Depths. This area is located deep beneath the Koi Pond's surface on the northern side of the Yard map. To explore the Pond Depths in Grounded, you must either make quick trips from the abyss to the surface or acquire some gear enabling you to hold your breath longer underwater.

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How To Get The Sunken Bone
Craft The Acorn Shovel To Harvest The Item
The only way to dislodge the Sunken Bone from the floor of the Pond is to use the Acorn Shovel item to dig up the material once you swim near it. You may the Acorn Shovel from harvesting other items like Clay, Muddy Scales, and various Grubs in Grounded. The recipe for creating an Acorn Shovel is:
Ingredient |
Quantity |
---|---|
Sprig |
x2 |
Crude Rope |
x1 |
Acorn Shell |
x1 |
Sprigs are common sprout-like plants growing everywhere around the Yard, so you shouldn't have a hard time finding them as you try to build an Acorn Shovel. On the other hand, Acorn Shells are found on fallen Acorns, which can be found often near the huge tree in the Oak Hill biome in Grounded. You'll want to collect more than one Shell since Crude Rope requires an item called a Grinder to be produced.
Crude Rope is a refined crafting material in Grounded, making it something you can't find as a natural resource like Acorn Shells or Sprigs. Grinders can make Crude Rope, but only if you have these parts to build the structure:
Ingredient |
Quantity |
---|---|
Red Ant Parts |
x5 |
Flower Petals |
x3 |
Acorn Shells |
x2 |
Weed Stems |
x2 |
Once you have all the right items, craft an Acorn Shovel and start planning your trip to and from the depths of the Koi Pond. As you can see in the video below by YouTube creator ChemicalApes, there are several locations in the water where you can find at least one Sunken Bone. Don't forget to plan and have at least something to defend yourself from hostile creatures lurking underwater.
to bring a light source to these underwater depths, so you can see where a Bone could be in the first place. If you can avoid deadly encounters with Diving Bell Spiders in the area, you should have no problem finding where a Sunken Bone could be in Grounded.
Source: ChemicalApes/YouTube