Ras Siyyan or Ras Siyan ( ar, رأس سيان) is a peninsula in the

Obock Region The Obock Region ( aa, Rakaakay Obock, ar, إقليم أوبوخ, so, Gobolka Obokh) is a region in northern Djibouti. It has a land area of 4,700 square kilometres (1,800 sq mi), and had a population of 37,856 in 2009. It lies along the Red S ...

Djibouti Djibouti, ar, جيبوتي ', french: link=no, Djibouti, so, Jabuuti officially the Republic of Djibouti, is a country in the Horn of Africa, bordered by Somalia to the south, Ethiopia to the southwest, Eritrea in the north, and the Red ...

, on the

Bab-el-Mandeb The Bab-el-Mandeb ( Arabic: , , ) is a strait between Yemen on the Arabian Peninsula, and Djibouti and Eritrea in the Horn of Africa. It connects the Red Sea to the Gulf of Aden. Name The strait derives its name from the dangers a ...

strait (between the

Red Sea The Red Sea ( ar, البحر الأحمر - بحر القلزم, translit=Modern: al-Baḥr al-ʾAḥmar, Medieval: Baḥr al-Qulzum; or ; Coptic: ⲫⲓⲟⲙ ⲛ̀ϩⲁϩ ''Phiom Enhah'' or ⲫⲓⲟⲙ ⲛ̀ϣⲁⲣⲓ ''Phiom ǹšari''; ...

and the Gulf of Aden), about 20 km southwest of Perim Island. The peninsula consists of a reddish volcanic hill about 1.2 by 0.5 km and 138 m high,
Sailing Directions (Enroute) - Red Sea and Persian Gulf
'' page 161. National Geospatial Intelligence Agency pub. 172. Accessed 2012-07-6. connected towards to the mainland by a low sandy strip that stretches south by about 5 km while widening from 500 to 800 m.William James Lloyd Wharton, John Phillips (1900),
The Red Sea and Gulf of Aden Pilot
' page 230. Great Britain Hydrographic Offic. The Ras Siyyan volcano is currently inactive but young, having erupted through a 21,000-year-old coral reef formation. To the west of Ras Siyyan there is a shallow marshy bay or

lagoon A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into ''coastal lagoons'' (or ''barrier lagoons'') ...

, about 2.5 km wide, protected on the north side by shallow coral banks. The bay is fringed with patches of

mangrove A mangrove is a shrub or tree that grows in coastal saline or brackish water. The term is also used for tropical coastal vegetation consisting of such species. Mangroves are taxonomically diverse, as a result of convergent evolution in severa ...

bushes (''

Avicennia marina ''Avicennia marina'', commonly known as grey mangrove or white mangrove, is a species of mangrove tree classified in the plant family Acanthaceae (formerly in the Verbenaceae or Avicenniaceae). As with other mangroves, it occurs in the interti ...

''), in spite of the little input of freshwater. Abundant sea grasses (chiefly '' Halodule'' and '' Thalassia'' species) form large beds in the bay, and

Shark Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachi ...

s breed there in October.(2003-2004) ''Master Plan for the Isles des Sept Frères/Ras Siyyan and Godoria Marine Protected Area]''
Draft, 2003-09Draft, 2004-05-21
. Regional Organization for the Conservation of the Environment of the Red Sea and Gulf of Aden (PERSGA) An isolated white rock, Rocher Siyyan, lies in the bay about 800 m southwest of the volcanic hill. The hill of Ras Siyyan is sometimes considered the seventh of the

Seven Brothers 7 is a number, numeral, and glyph. 7 or seven may also refer to: * AD 7, the seventh year of the AD era * 7 BC, the seventh year before the AD era * The month of July Music Artists * Seven (Swiss singer) (born 1978), a Swiss recording artist ...

(Sawabi) islands; the other six lie from about 4.5 km to 14.5 km to the east.

References

Landforms of Djibouti Peninsulas of Africa {{Djibouti-geo-stub