We start in South Africa and take a walk along the beach until we have circled Africa clockwise. Which countries do we enter successively until we are back in South Africa?
We circle the continent clockwise (The sea is always on the left, the land on the right)
The Suez Canal is considered beach (i.e. we do not enter Asia) and estuaries are crossed by magic ...
Note that we are likely to enter some countries multiple times!