As of 2026-10-12, Kamchatka Bay tops the list with 2,000 m.
- #1 Kamchatka Bay — 2,000 m
gulf of the Bering Sea
source Wikidata - #2 Kronotsky Gulf — 1,500 m
gulf of the Pacific Ocean, Russia
source Wikidata - #3 Gulf of Lion — 1,200 m
bay
The Gulf of Lion or Gulf of Lions is a wide embayment of the Mediterranean coastline of Catalonia in Spain with Languedoc-Roussillon and Provence in France, extending from Begur in the west to Toulon in the east. Read more on Wikipedia.
Wikidata - #4 Gulf of Ajaccio — 1,048 m
bay on Corsica
source Wikidata - #5 Gulf of Taranto — 500 m
bay
The Gulf of Taranto is a gulf of the Ionian Sea, in Southern Italy. Read more on Wikipedia.
Wikidata - #6 Kandalaksha Gulf — 330 m
bay of the White Sea
The Kandalaksha Gulf is located in the Republic of Karelia, and Murmansk Oblast in northwestern Russia. Forming the north-western corner of the White Sea, it is one of four large bays and gulfs of this sea, the others being the Onega Bay (south-west), the Dvina Bay (south), and the Mezen Bay. Read more on Wikipedia.
Wikidata - #7 Gulf of Bothnia — 295 m
the northernmost arm of the Baltic Sea
The Gulf of Bothnia is the northernmost arm of the Baltic Sea, between Finland's west coast and the northern part of Sweden's east coast. It is divided into the Bothnian Bay, the (North) Kvarken and the Bothnian Sea. In the south of the gulf lies Åland, between the Sea of Åland and the Archipelago Sea. Read more on Wikipedia.
Wikidata - #8 Kattegat — 109 m
sea area between Denmark and Sweden
The Kattegat is a sea of roughly 24,000 km2 (9,300 sq mi) bounded by the Skagerrak in the north, Jutland in the west, the Danish Straits and Zealand in the south and the Swedish provinces of Bohuslän, Västergötland, Halland and Scania in the east. The Baltic Sea drains into the Kattegat through the Danish Straits. Read more on Wikipedia.
Wikidata - #9 Pagasetic Gulf — 102 m
bay in Thessaly, Greece
The Pagasetic Gulf is a rounded gulf with a maximum depth of 102 metres (335 ft) in the Magnesia regional unit of east-central Greece. It is formed by the Pelion peninsula and is connected to the Euboic Sea through a narrow channel about 4 km wide. Read more on Wikipedia.
Wikidata - #10 Gulf of İskenderun — 90 m
gulf of the Mediterranean Sea
The Gulf of Alexandretta or İskenderun is a gulf of the eastern Mediterranean or Levantine Sea. It lies beside the southern Turkish provinces of Adana and Hatay. Read more on Wikipedia.
Wikidata