Heaviside's dolphin

Heaviside's dolphin (Cephalorhynchus heavisidii), sometimes called Haviside's dolphin after its discoverer, is a small dolphin found off the coast of Namibia and the west coast of South Africa. It is one of four dolphins in the genus Cephalorhynchus — the others being the Chilean dolphin, Hector's dolphin, and Commerson's dolphin.

Name

Early in the 19th century, a specimen was caught off the Cape of Good Hope and brought to the United Kingdom by a Captain Haviside of the British East India Company. Zoologist John Edward Gray, who described the species in his Spicilegia Zoologica, misidentified Haviside as a surgeon of note named Heaviside, whose collection was acquired roughly contemporaneously. "Heaviside's Dolphin" is most common in the literature, though some authorities use the originally-intended name "Haviside's dolphin".

Population and distribution

Although sightings of the species are not uncommon off the Skeleton Coast of Namibia, Heaviside's dolphins have not been systematically studied by scientists. They have been recorded off the coast of northern Namibia at 17°S and as far south as the southern tip of South Africa. Sightings are often recorded from major population centres such as Cape Town and towns such as Walvis Bay. Sightings are likely from Lambert's Bay either from the shore or from boat trips run from the harbour. No estimates of abundance exist.

Benguela

Benguela (Portuguese pronunciation: [bẽˈɡɛlɐ], São Felipe de Benguela, formerly spelled Benguella) is a city in western Angola, south of Luanda, and capital of Benguela Province. It lies on a bay of the same name, in 12° 33’ S., 13° 25’ E. Benguela is one of Angola's most populous cities.

History

Portuguese rule

Benguela, a Portuguese fort from 1587, was founded in 1617 by the Portuguese under Manuel Cerveira Pereira, 8th Governor of Angola (1604–1607). It was long the centre of an important trade, especially in slaves to Brazil and Cuba. Ships anchored about 1.6 kilometres (1 mi) off the shore, in depths of 7 to 11 metres (23 to 36 ft) and transferred loads to smaller boats which used five or six jetties in the town. However the nearby deep-water sheltered harbour of Lobito was a much larger port.

Besides the churches of S. Felipe and S. António, the hospital, and the fortress, there were, as of 1911, only a few stone-built houses. A short way beyond Benguela is Baía Farta, where salt was manufactured and sulphur was extracted. Close to Baia Farta was the beach of Baia Azul. The city prospered and grew in the following decades. The Benguela Railway was built in the early 20th century by Portugal to connect the city and Lobito to the interior, and it achieved great success when linked to the Copperbelt of Katanga, DR Congo and Zambia. Starting in the early 20th century, Benguela attracted, developed, and retained quality businesses and professionals into its thriving and growing economy. Sisal and fishing industries expanded and the financial, construction and services market boomed until 1974.

Pelican Point

Pelican Point may refer to:

Australia

South Australia

Western Australia

Canada

United States

Caught on Camera

Caught on Camera is a British documentary series, which looks at real-life footage, filmed by members of the public.

Episodes

References

External links

Dolphin

Dolphins are a widely distributed and diverse group of fully aquatic marine mammals. They are an informal grouping within the order Cetacea, excluding whales and porpoises, so to zoologists the grouping is paraphyletic. The dolphins comprise the extant families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the new world river dolphins), and Pontoporiidae (the brackish dolphins). There are 40 extant species of dolphins. Dolphins, alongside other cetaceans, belong to the clade Cetartiodactyla with even-toed ungulates, and their closest living relatives are the hippopotamuses, having diverged about 40 million years ago.

Dolphins range in size from the 1.7 metres (5.6 ft) long and 50 kilograms (110 lb) Maui's dolphin to the 9.5 metres (31 ft) and 10 metric tons (11 short tons) killer whale. Several species exhibit sexual dimorphism, in that the males are larger than females. They have streamlined bodies and two limbs that are modified into flippers. Though not quite as flexible as seals, some dolphins can travel at 55.5 kilometres per hour (34.5 mph). Dolphins use their conical shaped teeth to capture fast moving prey. They have well-developed hearing − their hearing, which is adapted for both air and water, is so well developed that some can survive even if they are blind. Some species are well adapted for diving to great depths. They have a layer of fat, or blubber, under the skin to keep warm in the cold water.