To break the Earth Seal in Fields of Mistria, collect Archerfish, Coral Mantis, Jade Dulse, and Sapphire from the Tide Caverns.

The Earth Seal is the second barrier you find on your path deeper into the Mines in Fields of Mistria. After opening the Water Seal on floor 20, you find the Earth Seal at the end of the Tide Caverns on floor 40. Compared to the Water Seal, breaking the Earth Seal is far more time-consuming even though it demands the same number of offerings.
How To Unlock the Earth Seal in Fields of Mistria

Just as you did with the Water Seal, take the Earth Seal Rubbing to Juniper to decipher it. Then, you need to find the following items within the Tide Caverns and offer them to the seal:
- Archerfish x1
- Coral Mantis x1
- Jade Dulse x1
- Sapphire x1
How To Get Archerfish in Fields of Mistria

Like the rest of the items required to open the Earth Seal, the Archerfish spawns between floors 21-39 in the Tide Caverns. While exploring the floors, look out for pools of water and shadows of fish moving under the surface. If you see a small fish shadow, stand at the edge of the pool and use your fishing rod to catch the Archerfish.
Besides the Archerfish, the Sapphire Betta is the only other fish in the Tide Caverns with a small shadow, which means that as long as you target the right shadows, you should find the Archerfish in a few attempts. Try to catch more than one since the fish can also be donated to the Museum as a specimen.
How To Get Coral Mantis in Fields of Mistria

The Coral Mantis is a purple insect that spawns randomly throughout the Tide Caverns. The small bug has an affinity for lurking near rocks, which can often camouflage it well. However, its tiny yellow eyes are a giveaway and something to keep an eye out for. Catch it using a bug net.
How To Get Sapphire in Fields of Mistria

Sapphire is found commonly throughout the Tide Caverns and can spawn on any of its floors. The sapphire ore looks exactly like its ruby counterpart, except the gems sticking out of it are of a deep blue shade. You can mine it using a pickaxe to get one sapphire.
How To Get Jade Dulse in Fields of Mistria

The Jade Dulse is a rare grass that resembles seaweed but grows on the cave’s grassy surface. Thankfully, it is easy to spot with its lime green color and upright corkscrew form. Try not to confuse it with the Underseaweed which grows in the underground pools of water. It can take days of searching to find one Jade Dulse, and they appear to spawn on any floor throughout the Tide Caverns.
Looking For More?
Thank you for reading the article. We provide the latest news and create guides for Baldur’s Gate 3, Starfield, ARK Survival Ascended, and more. Also, watch Deltia play games on Twitch or visit his YouTube channel!