259 articles
Hadley Bay
Hadley Bay (baie Hadley) is an official bay on Victoria Island, Nunavut, Canada, at 73°N 110°W, named in 1982; it gives its name to a 2013 Geological Survey of Canada tectonic assemblage map.
Hamburg Bay
Hamburg Bay (German: Hamburghafen) is a bay on the northwest coast of Anvers Island, Palmer Archipelago, Antarctica, just south of Bonnier Point at about 64°30'S, 63°57'W. Discovered and named in 1874 by Dallmann's German expedition for the port of Hamburg.
Hampton Roads
Hampton Roads, Virginia: roadstead where the James, Nansemond, and Elizabeth rivers meet Chesapeake Bay; major port, US Navy hub, site of the first ironclad battle, and a region highly exposed to sea level rise.
Hanauma Bay
Hanauma Bay, on Oʻahu's southeastern coast, Hawaiʻi, is a curved bay in a breached volcanic tuff cone, the state's first Marine Life Conservation District (1967), capped at 1,400 nonresident visitors daily and known for its reef fish biomass and COVID-era recovery.
Hangzhou Bay (杭州湾)
Hangzhou Bay (杭州湾) is a funnel-shaped tidal bay on China's east coast, the Qiantang River estuary known for its tidal bore and 36 km bridge.
Hauraki Gulf
The Hauraki Gulf (Tīkapa Moana) is a large embayment on New Zealand's northeast North Island coast, home to the 1.2-million-hectare Hauraki Gulf Marine Park (2000), over 200 islands, Bryde's whales, and the 2025 Marine Protection Act.
Hero Bay
Hero Bay is a 17-mile-wide bay indenting the north side of Livingston Island, South Shetland Islands, Antarctica, between Cape Shirreff and Williams Point; named for the sloop Hero of Nathaniel B. Palmer's 1820-21 sealing fleet.
Hilton Inlet
Hilton Inlet, also Hilton Bay or Ensenada Hilton, is an ice-filled inlet on the east coast of Palmer Land, Antarctica, between Cape Darlington and Cape Knowles, discovered by USAS in 1940 and named for surveyor Donald C. Hilton.
Hudson Bay
Hudson Bay: large shallow seasonally ice-covered inland sea in central Canada, ~1.2 million km², receiving ~900 km³/yr river runoff; declining sea ice, isostatic rebound, Hudson's Bay Company history, polar bears, and Port of Churchill shipping.
Hughes Bay
Hughes Bay, also Bahía Hughes, is a bay between Cape Sterneck and Cape Murray on the Danco Coast, west Antarctic Peninsula, named for sealer Edward Hughes (1824-25) and site of the first recorded Antarctic mainland landing by John Davis, 7 February 1821.
Huon Bay
Huon Bay is a shallow Antarctic bay about 8 miles wide between Cape Ducorps and Cape Legoupil on the northwest coast of Louis Philippe Peninsula, at 63°23'S 58°00'W, named by d'Urville's 1837-40 expedition for Félix Huon de Kermadec.
IJ (Amsterdam)
The IJ is Amsterdam's central waterway, once a Zuiderzee tidal bay, now running from the IJmeer to the North Sea Canal. Key facts: 1876 canal, GVB ferries, IJburg islands, IJmuiden salt management.
Inútil Bay
Inútil Bay (Bahía Inútil, Useless Bay), named 1827, is a 4776 km² semi-enclosed bay on northwest Tierra del Fuego, Chile, linked to the Strait of Magellan and Almirantazgo Sound, noted for poor anchorage and rich marine biodiversity.
Ironbottom Sound
Ironbottom Sound (formerly Savo Sound) is the water between Guadalcanal, Savo Island, and Nggela Islands, Solomon Islands, named for the 100-plus warships sunk in the 1942–43 Guadalcanal night naval battles.
Jakarta Bay
Jakarta Bay is a shallow bay on the northwest coast of Java, Indonesia, immediately north of Jakarta, receiving untreated wastewater from about 20 million people and 2,050 industries.
James Bay
James Bay (Baie James) is the southern arm of Hudson Bay between Quebec and Ontario, site of Henry Hudson's 1610-11 wintering, the 16,527 MW James Bay hydroelectric project, and the 1975 James Bay and Northern Quebec Agreement.
Jervis Bay
Jervis Bay: temperate embayment (~124 km2) on the NSW south coast, about 200 km from Sydney. Protected by Jervis Bay Marine Park, Booderee National Park, and the Commonwealth Jervis Bay Territory.
Joseph Bonaparte Gulf
Joseph Bonaparte Gulf: large shallow macrotidal inlet of the Timor Sea between the Kimberley (WA) and Arnhem Land (NT), 360 km wide, named by the French Baudin expedition; hosts the 8,597 km² Joseph Bonaparte Gulf Marine Park and a banana prawn fishery.
Kamchatka Gulf
Kamchatka Gulf (Камчатский залив), gulf of the Pacific on eastern Kamchatka, Russia; northernmost Pacific-coast gulf, about 148 km long, 74 km wide, up to 2000 m deep at the entrance, near the Kamchatka River mouth.
Kandalaksha Gulf
Kandalaksha Gulf (Кандалакшский залив), also Kandalaksha Bay, is the northwesternmost gulf of Russia's White Sea, 185 km long with depths to 350 m, a Ramsar wetland hosting half the White Sea common eider population, the Kandalakshsky zapovednik, and ports including Kandalaksha and the Vitino oil terminal.
Kandla Port
Kandla Port (Deendayal Port Authority), a major Indian government seaport in Kandla Creek, 90 km inside the Gulf of Kutch, Gujarat; founded after Partition to replace Karachi; handled 150.16 MMT in FY2024-25 and a record 160.11 Mt in FY2025-26, ranking second to Paradip among major ports, with Mundra as its nearby private rival.
Kao Bay
Kao Bay (Kau Bay, Teluk Kao), a 470-m-deep pear-shaped silled marine basin between the northern arms of Halmahera, Indonesia; poorly ventilated, anoxic sediments, El Niño-driven deep-water renewal, glacial freshwater-lake phase, mercury and arsenic in fish.
Kealakekua Bay
Kealakekua Bay is an inlet on the western coast of the island of Hawaiʻi, known as the site of Captain James Cook's death in 1779.
Keller Inlet
Keller Inlet is an ice-filled inlet between Cape Little and Cape Fiske on the Lassiter Coast, Palmer Land, Antarctic Peninsula, at 74°16'S 61°10'W, named by Finn Ronne after Louis Keller of Beaumont, Texas.
King George Bay
King George Bay is a bay indenting the south coast of King George Island, South Shetland Islands, between Lions Rump and Turret Point; named 24 January 1820 by Bransfield's expedition for the reigning British sovereign.
Kola Bay (Кольский залив)
Kola Bay, also known as Kola Inlet, is a fjord-shaped inlet of the Barents Sea in northwest Russia whose ice-free water hosts the city of Murmansk.
Korea Bay
Korea Bay (서해 북부) is the northeastern embayment of the Yellow Sea, below China's Liaodong Peninsula between Liaoning and North Korea. The Yalu River enters it at Dandong; drift ice up to 35 cm forms there in winter.
Kotzebue Sound
Kotzebue Sound: large shallow embayment (>90,000 km2, depth 10–18 m) of the southeast Chukchi Sea, northwest Alaska, named by Otto von Kotzebue in 1816; receives the Noatak, Kobuk, and Selawik Rivers; hub of Iñupiaq subsistence and the Sisualik trade fair.
Kronotsky Gulf
Kronotsky Gulf (Кроноцкий залив), a Pacific gulf on eastern Kamchatka between the Shipunsky and Kronotsky peninsulas, 68.5 km long, up to 1,500 m deep, with a major Holocene tsunami record and pollock spawning canyons.
Lallemand Fjord
Lallemand Fjord, the largest embayment on the west coast of the Antarctic Peninsula (66°50′–67°20′S), named by Charcot's 1909 expedition for Charles Lallemand; hosts the Müller Ice Shelf and a key Holocene paleoclimate sediment record showing deglaciation before 8000 yr BP, a mid-Holocene optimum, and a Little Ice Age ice shelf advance.