DAHAB:
Dahab is a small town situated on the southeast coast of the Sinai Peninsula in Egypt. Formerly a Bedouin fishing village, located approximately 80 km (50 mi) northeast of Sharm el-Sheikh, Dahab is considered to be one of the Sinai’s most treasured diving and Windsurfing destinations and is served by Sharm el-Sheikh International Airport. Masbat (within Dahab) is a popular diving destination, meaning that there are many (50+) dive centers located within Dahab.
Dahab can be divided into three major parts. Masbat, which includes the bedouin village Asalah, is in the north. South of Masbat is Mashraba, which is more touristic and has considerably more hotels. In the southwest is Medina which includes the Laguna area, famous for its excellent shallow-water windsurfing.
The region of Asalah is quite developed and has many camps and hostels. Most people who have visited Dahab in the past were backpackers interested in windsurfing, diving and snorkeling in the Red Sea.
BLUE HOLE:
This is one of the popular diving location on east Sinai, a few kilometers north of Dahab on the coast of the Red Sea.
The Blue Hole is a submarine sinkhole (a kind of cave), around 130 m deep. There is a shallow opening around 6 m deep, known as ‘the saddle’, opening out to the sea, and a 26 m long tunnel, known as the arch, the top of which lies at a depth of 56 m. The hole itself and the surrounding area has an abundance of coral and reef fish.
Snorkeling there is a most enjoyable experience, however, diving through the arch requires suitable training and equipment, usually including a mixed-gas qualification from a technical diving training agency, technical diving equipment such as redundant gas supply, redundant large-capacity buoyancy control device and a breathing gas with reduced nitrogen content such as Trimix.