When you spawn on this seed, you’ll be on a tiny island in the middle of the ocean. This island doesn’t have much to offer other than pigs. If you swim around you can find other islands with more on them, but the best parts of this seed lay under the ocean surface. So prepare to go diving.
Minecraft PC 1.10.X Seed: 2799072378057099548
To find the first ocean monument of the seed, swim south from the spawn island. Eventually you’ll see the monument below the surface of the water.
Ocean monuments are made of different types of prismarine blocks, and they have guardians swimming throughout them. There are also three elder guardians that are much bigger than the normal guardians. Beware of all these mobs because they will attack every squid and person in sight.
If you can navigate through the many rooms and guardians to find the treasure room, you’ll find eight gold blocks encased in dark prismarine. See if you can get your loot and get out alive.
To find the underwater opening that leads to a mineshaft, go to the coordinates of 160 / 36 / 433. If you go above the water, you see another ocean monument to the south, but for now go to the ocean floor.
There you should find the opening amid the gravel. If you can’t see it, go down in the little ditches made in the gravel and swim around. Eventually it will spit you into an open area with an abandoned mineshaft.
This mineshaft can be a bit tricky to navigate due to all the waterfalls filling the tunnels and the way the cave causes many short dead ends.
See if you can still find a few chest minecarts. I found one around 192 / 30 / 430 containing a golden apple, redstone dust, torches, rails, and some melon seeds. (I can’t give directions because I’m not even sure how I got there. Just wander around in the direction of those coordinates and you’ll find it.)
I hope you enjoy exploring the underwater treasures of this seed. See what else you can find in the murky depths!