For this special surveyor ships are used. They send down SONAR to the base of the sea and receive tit with a receiver. then the time taken by the signal to bounce of the seabed and reach back is measured to find the dept of the sea.
Bottomless Sea has 50 Floors.
38 floors are in the magical sea.
50 Floors, there are 50 floors in the Bottomless Sea
50 floors.
50 floors
20 floors
Bottomless Sea has 50 floors.
it has 20 floors.
75 floors
Bottomless Sea has 50 floors.
20 floors
there are 15 floors and the sendond part there are 14 floors