Pinctada is a genus of saltwater oysters, marine bivalve mollusks in the family Pteriidae. These pearl oysters have a strong inner shell layer composed of nacre, also known as "mother of pearl".
Pearl oysters are not closely related to either the edible oysters of family Ostreidae or the freshwater pearl mussels of the families Unionidae and Margaritiferidae.
Oyster is the common name for a number of different families of salt-water bivalve molluscs that live in marine or brackish habitats. In some species, the valves are highly calcified, and many are somewhat irregular in shape. Many, but not all oysters, are in the superfamily Ostreoidea.
Some species of oyster are commonly consumed and are regarded as a delicacy in some localities. Some types of pearl oysters are harvested for the pearl produced within the mantle. Others, such as the translucent windowpane oysters, are harvested for their shells.
The Persian Gulf, sometimes called the Arabian Gulf, is a mediterranean sea in West Asia. The body of water is an extension of the Arabian Sea and the larger Indian Ocean located between Iran and the Arabian Peninsula. It is connected to the Gulf of Oman in the east by the Strait of Hormuz. The river delta of the Shatt al-Arab forms the northwest shoreline.
The Persian Gulf has many fishing grounds, extensive reefs (mostly rocky, but also coral), and abundant pearl oysters; however, its ecology has been damaged by industrialization and oil spills.
The Gulf of Tadjoura (Somali: Gacanka Tajuura; Arabic: خليج تجرة) is a gulf or basin of the Indian Ocean in the Horn of Africa. It lies south of the straits of Bab-el-Mandeb, or the entrance to the Red Sea, at 11°42′N 43°00′E / 11.7°N 43.0°E. The gulf has many fishing grounds, extensive coral reefs, and abundant pearl oysters. Most of its coastline is the territory of Djibouti, except for a short stretch on the southern shore, which is part of the territory of Somaliland.
The Gulf’s other marine habitats include sea grass beds, salt pans and mangroves.
The Persian Gulf, sometimes called the Arabian Gulf, is a mediterranean sea in West Asia. The body of water is an extension of the Arabian Sea and the larger Indian Ocean located between the Arabian Peninsula and Iran (Persia). It is connected to the Gulf of Oman in the east by the Strait of Hormuz. The river delta of the Shatt al-Arab forms the north-west shoreline.
The Persian Gulf has many fishing grounds, extensive reefs (mostly rocky, but also coral), and abundant pearl oysters; however, its ecology has been damaged by industrialization and oil spills.
Spanish expeditions led by Columbus and Alonso de Ojeda reached the coast of present-day Venezuela in 1498 and 1499. The first colonial exploitation was of the pearl oysters of the "Pearl Islands". Spain established its first permanent South American settlement in the present-day city of Cumaná in 1502, and in 1577 Caracas became the capital of the Province of Venezuela. There was also for a few years a German colony at Klein-Venedig.
The 16th- and 17th-century colonial economy was centered on gold mining and livestock farming. The relatively small number of colonists employed indigenous farmers on their haciendas, and enslaved other indigenous people and, later, Africans to work in the mines. The Venezuelan territories were governed at different times from the distant capitals of the Viceroyalties of New Spain and Peru.