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Austral Islands

(Encyclopedia)Austral Islands ôˈstrəl [key], volcanic island group, South Pacific, part of French Polynesia. They are sometimes known as the Tubuai Islands. The group comprises ...

Gambier Islands

(Encyclopedia)Gambier Islands gămˈbĭr [key], volcanic islands (6 sq mi/15.5 sq km), South Pacific, near the ...

Revillagigedo Islands

(Encyclopedia)Revillagigedo Islands or Revillagigedo Archipelago rāvēˈyähēhāˈᵺō [key], volcanic island group in the Pacific Ocean, c.450 mi (720 km) W of Colima state and S of Baja California, Mexico. The...

Volcano Islands

(Encyclopedia)Volcano Islands, Jap. Kazan-retto, island group, c.11 sq mi (30 sq km), W Pacific. The group consists of three islands, of which Iwo Jima (Iwo To) is the most important. The highest peak (3,181 ft/970...

Caroline Islands

(Encyclopedia)Caroline Islands, archipelago, c.830 sq mi (2,150 sq km), W Pacific, just north of the equator. The largest islands are Palau (Belau), Yap, Chuuk (Truk), Pohnpei (Ponape), and Kosrae. The islands are ...

Trobriand Islands

(Encyclopedia)Trobriand Islands trōˈbrēăndˌ, trōˌbrēăndˈ [key], small volcanic island group off SE New Guinea, part of Papua New Guinea. Kiriwana is the largest of the group's 22 islands. Yams, pearl shel...

Tyrrhenian Sea

(Encyclopedia)Tyrrhenian Sea tĭrēˈnēən [key], Ital. Tirreno, part of the Mediterranean Sea, c.475 mi (760 km) long and from 60 to 300 mi (97–483 km) wide, between the Ligurian Sea, the Italian peninsula, Sic...

Magdalen Islands

(Encyclopedia)Magdalen Islands ēl-də-lä-mädlĕnˈ [key], group of nine main islands and numerous islets (1991 pop. 13,991), Que., Canada, in the Gulf of St. Lawrence N of Prince Edward Island. They were discove...

sea level

(Encyclopedia)sea level, the level of the sea, which serves as the datum used for measurement of land elevations and ocean depths. Theoretically, one would expect sea level to be a fixed and permanent horizontal su...

Apostle Islands

(Encyclopedia)Apostle Islands, group of more than 20 wooded islands, in Lake Superior, off N Wis. Madeline, 13 mi (21 km) long, is the largest island and has the group's only settlement, La Pointe. Noted for their ...