Diving 3 metres below the sea level
Diving 3 meters below the sea level means going 3 meters deep into the water. To visualize this, imagine standing on the surface of the sea and then diving down, with each meter you go down taking you deeper into the water.
To calculate the depth of water at a certain point, we need to know the sea level and the desired depth. Sea level is the average height of the sea surface, and for this example, let's take it as 0 meters.
So, diving 3 meters below sea level means subtracting 3 meters from sea level. Using basic arithmetic, sea level (0 meters) minus 3 meters gives us a final depth of -3 meters.
It's important to note that negative numbers in this context indicate going deeper below sea level. In reality, the water depth will vary depending on the specific location you are diving in, as sea level is not the same everywhere.