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Pentland Firth

(Encyclopedia)Pentland Firth pĕntˈlənd fûrth [key], channel, 6 to 8 mi (9.7–12.9 km) wide and c.14 mi (23 km) long, N Scotland. Connecting the North Sea with the Atlantic Ocean, it separates the Scottish main...

Wash, The

(Encyclopedia)Wash, The, inlet of the North Sea, 20 mi (32 km) long and 15 mi (24 km) wide, between Lincolnshire and Norfolk, E England. It receives the Witham, Wellend, Nene, and Ouse rivers. It is mostly shallow ...

Berryessa Snow Mountain National Monument

(Encyclopedia)Berryessa Snow Mountain National Monument, 330,780 acres (133,860 hectares), N Calif., est. 2015. Jointly managed by Forest Service and Bureau of Land Management, the monument extends from near sea le...

Viscount Melville Sound

(Encyclopedia)Viscount Melville Sound, 250 mi (402 km) long and 100 mi (161 km) wide, arm of the Arctic Ocean, Northwest Territories and Nunavut, Canada, between Victoria and Prince of Wales islands on the south an...

Triassic period

(Encyclopedia)Triassic period trīăsˈĭk [key], first period of the Mesozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table) from 205 to 250 million years ago. Throughout the Triassi...

lionfish

(Encyclopedia)lionfish, common name for a genus (Pterois) of the family Scorpaenidae (see rockfish), comprising venomous subtropical marine fish native to the South Pacific, the Indian Ocean, and the Red Sea. Nativ...

guillemot

(Encyclopedia)guillemot gĭlˈəmŏtˌ [key], northern sea bird, genus Cephas, of the auk family. The black guillemot, or trystie, Cephus grylle, is about 13 in. (33 cm) long and is very striking in its breeding pl...

Zeeland

(Encyclopedia)Zeeland zēˈlənd, Dutch zāˈlänt [key], province (1994 pop. 363,900), c.650 sq mi (1,680 sq km), SW Netherlands, bordering on Belgium in the south and the North Sea in the west. The main cities ar...

Perekop, Isthmus of

(Encyclopedia)Perekop, Isthmus of pĕrĭkôpˈ [key], c.19 mi (30 km) long and from 5 to 14 mi (8–23 km) wide, connecting Crimea with the Ukrainian mainland. The Crimean portion of the isthmus passed to Russian c...

Pliocene epoch

(Encyclopedia)Pliocene epoch plīˈəsēn [key], fifth epoch of the Cenozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table), from 5.1 to 2 million years ago. By the beginning of the P...