Entering Saudi Arabia is a complex affair. As there is no such thing as a tourist visa, you have top obtain a visitor's visa, which means you have to be sponsored by a Saudi national. Probably, the simplest way of entering is on an approved organised tour. The visa application has to be made at the Saudi Embassy in the country of your origin.
Once you have arrived in Saudi, restrictions remain on alcohol and Westerners, both male and female, are required to adhere to Saudi's standards of legal morality in dress, demeanor and behavior in public.
Women should NEVER go out without a headcovering and they should wear an abaya as well. This is mandatory in Riyadh, although the coastal towns are more liberal. Do NOT wear crosses, do not talk about religion, do not criticize Islam. Don't even THINK about wearing shorts in public unless you're at the beach.
For better readability of the table, pass into the landscape mode.
The Kingdom of Saudi Arabia is the largest country of the Arabian Peninsula. It is bordered by Jordan on the northwest, Iraq on the north and northeast, Kuwait, Qatar, Bahrain, and the United Arab Emirates on the east, Oman on the southeast, and Yemen on the south.
Saudi Arabia has the longest coastline on the Red Sea - over 79 percent of the sea's eastern shoreline - and a wealth of diving possibilities. From the Jordanian border on the northern Gulf of Aqaba to the Yemeni border in the far south, there are probably as many reefs in Saudi waters as the rest of the Red Sea combined and what is so intriguing is that unlike all of the other shores, they are almost entirely unexplored.
Just under the surface is a pristine coral reef containing at least 200 species of coral in different colours. Compared to the more frequented resort areas of Egypt like Sharm El-Sheik and Hurghada, divers state that Jeddah's reefs are unharmed and not crowded with dive boats.