Erythraean Sea, Ancient maritime region between Horn of Africa and Arabian Peninsula, Yemen.
The Erythraean Sea is an ancient name for the waters spanning between the Horn of Africa and the Arabian Peninsula, encompassing what are now known as the Red Sea, Persian Gulf, and northern Indian Ocean. This broad maritime region served as a crucial passage linking distant trade networks across three continents.
This maritime region supported established trade routes since antiquity, with goods moving between Egyptian and Indian ports. From the 18th century onward, the term fell out of use as European mapmakers divided the region into separate, named bodies of water.
The Periplus of the Erythraean Sea, written in 60 CE, documents maritime trade routes between Egyptian-Roman ports and western India through this region.
This region is difficult to visit as a single destination, as it spans multiple modern countries with varying conditions and access restrictions. Visitors interested in ancient trade routes should research individual seas and ports like Aden or Muscat.
The name comes from the Greek word for red, referring to occasional algal blooms that tint the water reddish. This natural phenomenon was a recognizable feature for ancient sailors navigating the region.
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