On the key taken from the previous step you will find a buoy image

The next step is to shift slider 1 and 3 to the left Now that you have brought all the sliders in the locked position – your vertical slider is moving freely.

same buoy image can be found on the bottom of Nautilus Cluebox.

Now you need to find the right order for bringing the horizontal sliders into an unlocked position. The principle is the following: when you unlock the first horizontal slider – the vertical slider should still be able to move freely in 3 positions. When you unlock the second horizontal slider – the vertical slider should

Rotate the wheel to the left, as indicated by the buoy icon, AND look at the symbols that can be seen in the middle of the “octopus”

Here is the right sequence: Slider 2,3,1,4 as shown. Now you can release the last key!

Listen to the “clicks” (see the video below).

To open the box make sure that all the “petals” on the front side of the box are released from their slots: Release the capsule!

The symbols you see while rotating the wheel can also be found on the wheels near the ray fish. Here is the combination of symbols and numbers which you need:

The ribs of the capsule have different forms. Check those which are moving

The left and the right wheels can be rotated freely when the middle wheel is looking towards the right or the left wheel correspondingly (see the video) Rotation of the middle wheel always causes the rotation of both other wheels. For example if you want the middle wheel to come to the position of 4

There are other elements of the box which are required to open the capsule