Clay in Stranded Deep comes from underwater clay nodes around island shelves, and you must mine them with a refined pick to actually collect it.

Clay basics

  • Clay is only found in underwater deposits, not on beaches or dry land.
  • You use it mainly for advanced crafting like brick scrap, brick station, clay furnace, fuel still, and water bottles.

Step 1: Unlock and craft a Refined Pick

You cannot harvest clay with basic tools; you specifically need a Refined Pick.

To get it:

  • Reach Crafting Level 3 so the Refined Pick recipe unlocks.
  • Crafting recipe: Leather ×2, Stick ×1, Stone Tool ×2.
  • A fast way to level crafting is mass‑crafting cheap items like crude spears from sticks until you hit level 3.

Step 2: Where to find clay

Clay nodes spawn as brown rock-like lumps on the seafloor near islands and stand out against the usual grey rock.

Key location tips:

  • Look around the island shelf : the zone where the shallow sea floor starts to drop off into deeper water.
  • Nodes tend to appear around the east side of small and large islands, usually in clusters of 5–7 pieces per node.
  • Swim or coast slowly around the island in your raft and look down into the shallows; clay “sticks out like a sore thumb” because of its brown color.

Step 3: Safely mining clay

Diving for clay is risky because of poisonous creatures and sharks, so go prepared.

Safety tips:

  • Farm Pipi plants early, make a couple of plots, and mass‑grow Pipi so you can craft antidotes in advance.
  • Always carry at least one antidote when diving; standing still in the water for 30–60 seconds often results in something poisoning you.
  • Use your raft as a mobile base: park close to clay nodes so you can quickly dump clay into containers and avoid drowning or predator attacks.

Mining steps:

  1. Spot a clay node (dark‑brown rock on the seafloor).
  1. Dive down with the Refined Pick equipped and mine it until it breaks into loose clay pieces.
  1. Grab all dropped clay, surface for air, then stash it on your raft.

Extra tips and “easier” clay

  • Natural islands can sometimes have anywhere from 0 up to 4 clay deposits, so a few barren islands in a row is normal bad luck.
  • Some players build custom islands in creative with maximum clay deposits if they want a long‑term clay farm world.
  • Expect to regularly find around 2–4 deposits per island in normal worlds, but this varies by seed.

TL;DR: Get Crafting 3, make a Refined Pick, circle islands over the drop‑off zone, look for brown clay nodes on the seafloor, and bring antidotes plus a raft nearby so you can mine safely and efficiently.

Information gathered from public forums or data available on the internet and portrayed here.