Minecraft

Must have Aquatic Update (1.5 Phase 2)

Sea Pickles generate in warm oceans, and emit a small amount of light that can be seen from above the ocean. They can be mined with any, or no, tools.



Simply grab four of them and place them all on one square to unlock the achievement.

This solution is only applicable to those who can host an achievement world from a PC, tablet or phone!
I've made an achievement world which has both phase 1 and 2 achievements in there pretty much set up. Download it from here:
https://www.dropbox.com/sh/90bviwj4dhz8i83/AAATWKpkwXEVNQ8ai...

Aquatic Sh0wt1m3 is the file for MCPE versions (which is in version 1.5)
.W10_Aquatic Sh0wt1m3 v1 for 1.5.0 (Thanks to Mathguy42) is for WP and Win10.

For the achievements, open chest on left. Retrieve the Prismarine blocks, Trident, raw salmon and sea pickles from the top row.

Jump in the water and go underwater. Have the trident in your hand and hold LT/right mouse and then release to give your self a boost for "Do a Barrel Roll!". Go to the portal near the shore and place the missing prismarine block on the center bottom (directly beneath the conduit) to unlock Moskstraumen. Now go to any random sand block on the floor in the ocean and place 4 sea pickles on the same block to unlock "One two sea four pickles". Last thing to do is to feed salmon to a dolphin. Just swim around for a bit and once you spot one head over to him and feed him the raw salmon to unlock "Echolocation".


Note: If unsure how to extract world, have a look at the walkthrough's hints and tips page.

****MAY NO LONGER WORK. PLEASE SHARE IF YOU FIND A SEED THAT DOES***

SETTINGS:

Survival
Peaceful
Starting map *
Bonus chest *
member*
Infinite
coral reef seed : -214416825 (needs the - )
SHOW COORDINATES ON

location 350 , 287 (middle number is your height)

When you reach that location and are swimming you should notice glowing spots below the water. You don't need to be under water to see these spots. Swim down and you will find at least 4 sea pickles. Leave the water and place the 4 sea pickles down on the same tile and you will get the achievement. You do not need 16 or a 4x4 square. Just put 4 sea pickles on the same block and it's yours.

Simple step by step video on how to unlock: One Pickle, Two Pickle, Sea Pickle, Four

Great Aquatic Seed: 107016

In order to obtain this achievement, you will need 4 sea pickles, which can be found in the warm ocean biome*. They are distinguishable underwater due to how they glow. You do not need any tools to mine them. After obtaining all 4 sea pickles, place them all on a 1x1 surface. You will notice that they will stack up to 4. After doing that, the achievement should pop. Here's a video that might help:
*By the way, here's a seed that spawns you in a warm ocean biome (works with 1.16): -1278051279

Just unlocked this in 1.20.12. Obviously, it might not work in newer versions.

Create new world > Advanced > Templates > "Desert Village" (seed 1738801).

This will spawn you in the middle of a village. There are two houses that have two pickles each as a decor.

Their precise coordinates: 17 63 -11 and -17 63 26.

Collect all four, place them on a single tile, and voila.