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Astacenus/Olbianus Sinus — by C. Foss — last modified Aug 23, 2021 05:02 PM

The Gulf of İzmit (Turkish: İzmit Körfezi) is also known as Izmit Bay. This body of water is a bay located at the easternmost edge of the Sea of Marmara.

Atlanticus Oceanus — by Mary E. Downs — last modified Oct 31, 2024 11:04 AM

Atlanticus Oceanus (The Atlantic Ocean) likely derives its name from Atlas, one of the Titans of Greek mythology. The Atlantic Ocean covers ca. 20% of the surface of the Earth.

Aualites Sinus — by D.T. Potts — last modified May 08, 2019 12:15 PM

Aualites Sinus (The Gulf of Aden).

Azanium Mare/Barbarikon Pelagos — by D.T. Potts — last modified Feb 10, 2025 09:45 PM

Azanium Mare/Barbarikon Pelagos (The Arabian Sea).

Baliaricum Mare — by P.O. Spann — last modified Feb 25, 2024 10:04 PM

The Balearic Sea or Iberian Sea: coastal waters to the south and east of the Iberian Peninsula.

Barakes Kolpos — by M.U. Erdosy — last modified Jul 31, 2024 11:04 AM

Barakes Kolpos (Gulf of Kachchh)

Barygazon Kolpos — by M.U. Erdosy — last modified Feb 10, 2025 09:47 PM

The Gulf of Khambhat is an inlet of the Arabian Sea along the west coast of India.

Basilicus Sinus — by C. Foss — last modified Mar 20, 2012 02:13 PM

An ancient place, cited: BAtlas 61 E3 Basilicus Sinus

Bodotria? Aestuarium — by A.S. Esmonde Cleary — last modified Jan 20, 2025 10:19 AM

An ancient place, cited: BAtlas 9 D4 Bodotria? Aestuarium

Boreios/Gallicus/Cantabricus Oceanus — by E.W. Haley — last modified Dec 23, 2024 09:02 AM

The Bay of Biscay.

Bosphorus — by C. Foss — last modified Jun 12, 2023 11:21 AM

A strait that forms part of the boundary between Europe and Asia.

Bracheia/Prasodes Thalassa — by D.T. Potts — last modified Jun 17, 2020 08:08 PM

Bracheia/Prasodes Thalassa was a part of the Indian Ocean described by Ptolemy lying off the coast of east Africa

Britannicum Mare — by R. Warner — last modified Jan 10, 2025 07:47 PM

Britannicum Mare (The English Channel) is an extension of the Atlantic Ocean that separates England from northern France, and also joins the North Sea to the Atlantic.

Bubasius Sinus — by C. Foss — last modified Jan 12, 2025 09:25 AM

The ancient Bubasius Sinus is now known as the Gulf of Hisarönü (Hisarönü Körfezi in Turkish). The gulf lies Bozan Burnu to the north and Atabol Burnu to the south.

Capeus? Sinus — by D.T. Potts — last modified Jan 03, 2023 03:49 PM

An ancient place, cited: BAtlas 95 C3 Capeus? Sinus

Caspium/Hyrcanium Mare — by S.E. Kroll — last modified Dec 08, 2024 10:28 PM

The Caspian Sea is a remnant of a larger, inland sea and is now the world's largest enclosed body of water. It has been classified as both a lake and as a sea.

Cilicius Aulon — by S. Mitchell — last modified Jul 09, 2023 08:20 PM

The sea passage between Anemurium and Cyprus.

Cimmerius Bosp(h)orus — by David Braund — last modified Nov 10, 2024 08:08 PM

A strait between the modern Black Sea and Sea of Azov.

Codanus? Sinus — by J.H.F. Bloemers — last modified Jan 10, 2025 08:01 PM

An ancient place, cited: BAtlas 10 D2 Codanus? Sinus

Corinthiacus Sinus — by G. Reger — last modified Aug 01, 2024 02:22 PM

The Gulf of Corinth.