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Test of the Oyster Catcher

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Main Shard Bastet T5 Beta
Test of the Oyster Catcher
  • Go for a swim
  • Return to dry land
  • Locate an Oyster bed and Dive
  • Retrieve three Pearls
  • Show your Necklace to the Instructors
Demonstrated by RosieRazor in Shabbat Ab on 2010-03-15.


In the Test of the Oyster Catcher, you are to make a necklace from 14 pearls of varying sizes. Pearls can be obtained by swimming into water, finding a set of bubbles (which represent oysters), and then solving a small puzzle which will "catch" the oyster. Once you have your pearls, you must set them in the correct order to make your necklace.

Pearl Colors Pearl Sizes
  • Aqua
  • Beige
  • Black
  • Coral
  • Pink
  • Smoke
  • White
  • Huge
  • Large
  • Medium
  • Small


Upon signing up for the test, you learn how to swim!

  • You enter the water by walking straight up to it.
  • Swimming is done similarly to running in that left-clicking somewhere will swim you there (but right-clicking won't stop you). Terrain steepness is a factor in determining where you can and cannot move. If you're swimming in rivers or lakes, this should not be a big deal. However, this means you can't go too far out into the Red Sea or Mediterranean Sea.
  • To get out of the water, click on dry land, or select the Stop Swimming option from your Special menu. Be careful: it is possible to leave the water in places where you can't get back in.
  • To Dive: RIGHT CLICK on the water where you wish to dive

Finding an Oyster Bed

You must have "Fountain Detail" in your graphics options turned on to see the bubbles (Self >> Options >> Video). 
Any setting above minimum will do, though the higher the setting, the brighter the bubbles.
Fountain Detail at lowest setting
Fountain Detail at highest setting

An oyster bed will be visible from land. However, the visibility range is not that good - only 10-15 coords, and they are perhaps 5 coords out from land, meaning you need to be pretty close and right along the shoreline.

It appears that any given location yields pearls of different sizes, but of the same color. Most colors appear to cluster, with some colors only known to appear in particular regions. See the Pearl Bed Locations page for a listing of beds found and colors of pearls retrieved from them.

Oyster beds are represented by a grid of bubbles that can be of multiple colors (blue, green, white, plus off). Beds that give larger pearls are set on a larger grid and have more colors.

  • Small pearls come from 5x5 grids of blue.
  • Medium pearls come from 6x6 grids of blue, and in addition, the square you dive on does not toggle.
  • Large pearls come from 6x6 grids which appear as blue and green - they toggle through a cycle of blue, green, and off as you dive.
  • Huge pearls come from 6x6 grids which appear as blue, green and white.

Oyster beds occasionally appear on top of each other. Once you start diving, all but one of the beds will disappear. In some of these cases, the bed may behave oddly, with some bubbles "staying off" or "staying on" unexpectedly. It is unknown if these circumstances have any other effect. If two appear almost touching, diving in one will make the other disappear.

Solving the Bed

In order to retrieve the pearl from the oyster bed, you must get rid of all the bubbles in the grid. This puzzle is similar to the game Lights Out, in that you are given a grid of bubbles that are either "on" or "off" and you must turn them all off.

Grid spots are toggled by diving.

  • For medium size grids, diving on a spot will toggle all the orthogonal spots around it, but not the one where you actually dove.
  • For all other size grids, diving on a spot will toggle that spot and all orthogonal spots around it.
  • Each spot will cycle through its possible states (off plus each possible color for that grid size) in order as it is toggled.

Once all the spots are off, you will receive a pearl and 7 deben of oyster meat.

A bed will reset if left still for about two minutes. In addition, beds do despawn, so you won't be able to sit at a bed for hours on end trying to solve them.

Pearl Solver Tools

  • Pearl Solver tool from TheMazeEcho
  • Pearl Solver - Online - I'm hosting TME's, above solver, since it is superior and solves Medium beds, unlike the below solvers. Those solvers won't do Medium beds, due to the fact that that the spot you dive on, doesn't toggle colors. On pearl beds, locations toggle color, where you dive, except medium beds. His (above) link is his original (and works perfectly, as is). This link is to a website, with the above code, but with substituted images and a minor edit on code for faster execution. ~Cegaiel

Setting Pearls in the Necklace

In order to pass the test, you need to fit these pearls retrieved together and form a necklace.

A complete necklace will require:

  • 7 small pearls
  • 4 medium pearls
  • 2 large pearls
  • 1 huge pearl

There is a numbered slot for each pearl of these sizes (small position 1, small position 2, etc.).

Each slot requires a pearl of a specific color, with the exception of the Huge (which can be any color). You do not know what colors are needed for each pearl initially. How you determine this is by fitting a pearl into the necklace, then showing it off to the instructors at a School or University of Body. They will report to you the number of correct colors and and number of correct positions for each size. (This is similar to the old board game Mastermind.)

If you inserted a pearl in the wrong slot, you can remove it through the test menu. There is a chance of breaking the pearl, with a higher focus giving you a better chance to keep it intact.

  • At 0 focus the pearl will ALWAYS break.
  • At 13 focus, a reported 50% chance of successful removal
  • At 22 focus, I lost 1 pearl in 11 removals - TheMazeEcho

You may remove pearls that are placed in the right slot, but this is probably not something you want to do.

Admiring a Pearl

When you have a pearl in inventory, you can admire it under "Tests->Test of the Oyster Catcher->Admire". You will get a screen showing where the pearl was found and by whom.

When you have more than one pearl of the same color and size in your inventory, attempting to admire any of them will only look at the first one. You have to put the rest down or in a chest and look at them one at a time.


As you insert pearls into their correct positions, your Endurance attribute will rise. The exact level of increase is a bit sketchy, but roughly estimated, you get a point for every other pearl you insert. This isn't exact, though, and there probably is a better way to describe the increase.

  • I got my first END point when I put the first correct pearl at the right place, and my second END point at the 5th correctly placed pearl. -TheMazeEcho
  • I got two END from my first pearl (Huge), my third point after getting 2 smalls correct, and my fourth after getting 2 more smalls and 2 mediums. -Wrongskian
  • I got 1 END from my first pearl (Medium). - Snicker_Bastet

Note that you will get a message in the main window saying when you get this endurance increase. This can be used as another indicator that you inserted a pearl in the correct slot.

When you have all 14 pearls correctly inserted, show the necklace to your instructors, and you will pass the test.


Please note that this does not refer to your fellow players but rather the scientists at the University of the Body.

Go to UBody and select Tests. Then select Oyster Catcher and select the option to show the necklace to the instructors. You will come up with a dialogue box showing your progress. This progress chart will tell you which perals are the right colour and if they are in the correct setting.

Pearl Bed Locations