Duba (Arabic: ضبا‎) is a small city on the northern Red Sea coast, of Saudi Arabia. It is in Tabuk Province. Local citizens describe it as The Pearl of the Red Sea. Population: Population of Duba is about 65,000.

The first reference to Duba, under this name, is from 1203. However, the Valley of Salma and Valley of Kafafah were already known many centuries before.

The ancient Greek scholar Ptolemy mentioned a trade route leading from Kafafah to Lihyan (today's Al-`Ula). Sheikh Abdulghani Al Nabulsi wrote about Duba in 1790, in his account of going to Mecca for the Hajj.

Historically it is part of Madian; the city is mentioned in heavenly scriptures. According to Quran, Prophet Mosa settled in Madian (the region starts from Jordan river and extends to the town of Duba) where Prophet Shoaib hosted him. The town of Prophet Shoib as it is called is said to be located near Maqna where an ancient well can still be seen. The well is said to be the one where Prophet Mosa fed Prophet Shoaib's flock.

Karel Duba (29 September 1929, Písek – 21 August 1968, Ulan Bator, Mongolia) was a Czech guitarist, composer and bandleader. Duba was one of the first musicians to play electric guitar in Czechoslovakia. During his career, he collaborated with important exponents of Czech jazz and pop music. He died on a concert tour in Mongolia.

During German occupation of Czechoslovakia Duba began to appear at stage as a guitarist with dance orchestras. Following the liberation he performed as a member of various ensembles, The Film Symphonic Orchestra (FISYO) among others. At the beginning of the 1960s he formed his own professional band. The ensemble used elements of jazz, rock and country in their compositions. Karel Duba Ensemble was also the first Czech music group experimenting with electric guitars. A member of the ensemble and later successful songwriter and bandleader, bass-guitarist Karel Vágner, even called Duba the "first Czech who played electric guitar".

In the 1960s, Duba's band accompanied popular Czech singers, such as Josef Laufer, Karel Gott, Yvonne Přenosilová, Karel Hála, Hana Hegerová and Josef Zíma. They also recorded vinyl records for a major Czechoslovak label Supraphon and performed on concert tours both in Czechoslovakia and abroad.

Captain Nemo, also known as Prince Dakkar, is a character featured in Jules Verne's novels Twenty Thousand Leagues Under the Sea (1870) and The Mysterious Island (1874).

Nemo, one of the most famous antiheroes in fiction, is a mysterious figure. The son of an Indian Raja, he is a scientific genius who roams the depths of the sea in his submarine, the Nautilus, which was built on a deserted island. Nemo tries to project a stern, controlled confidence, but he is driven by a thirst for vengeance and a hatred of imperialism (particularly the British Empire) and wracked by remorse over the deaths of his crew members and even by the deaths of enemy sailors.

Nemo is Latin for "no one", and also (as νέμω) Greek for "I give what is due" (see Nemesis).

Nemo is, moreover, the Latin rendering of Ancient Greek Outis ("Nobody"), the pseudonym Odysseus employed to outwit the Cyclops Polyphemus.

Nothing concerning his past is revealed in Twenty Thousand Leagues Under the Sea, except his having reason to hate the countries of the world, the apparent loss of his family at some point in the past.

Tomáš Duba (born July 2, 1981, in Prague, Czechoslovakia) is a Czech professional ice hockey goaltender, he is first goalie for HC Oceláři Třinec.

He was drafted in the seventh round of the NHL, 217th overall, by the Pittsburgh Penguins in the 2001 NHL Entry Draft.

Duba turned on 1 May 2009 back to Czech Republic and signed with HC Oceláři Třinec, before that he played for Ässät of SM-liiga.

Duba appeared for the Czech national junior team (Under 20) in the 2000 Junior World Championships and 2001 Junior World Championships in Sweden and Moscow respectively. In 2001 Championships he won an award for the best goalie, while playing for SaiPa in Finland's SM-liiga. After this date, he has played for the Czech national team.

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