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Pearl farming takes place mainly in the southeastern region of the country, in an area stretching from Comilla District to the coastal Cox's Bazar District. The port city of Chittagong is a historic center of the pearl trade. [2] Bengali river gypsies, people who live in houseboats, are traditionally engaged in pearl farming. [1]
Iridescence is also found in plants, animals and many other items. The range of colours of natural iridescent objects can be narrow, for example shifting between two or three colours as the viewing angle changes, [5] [6] An iridescent biofilm on the surface of a fish tank diffracts the reflected light, displaying the entire spectrum of colours ...
The green chromide (Etroplus suratensis) is a species of cichlid fish that is native to fresh and brackish water habitats in some parts in India such as Kerala, Goa, Chilika Lake in Odisha and Sri Lanka.
A black pearl and a shell of the black-lipped pearl oyster. The iridescent colors originate from nacre layers. All shelled mollusks can, by natural processes, produce some kind of "pearl" when an irritating microscopic object becomes trapped within its mantle folds, but the great majority of these "pearls" are not valued as gemstones.
Kuri Bay is a remote coastal bay in the far north of Western Australia in the Kimberley region, about 370 km (230 mi) north of Broome.It is a designated point on the Western Australian Forecast Areas, utilised by the Bureau of Meteorology as a boundary for the North Kimberley Coast area from the West Kimberley Coast.
Iridescent mid altitude clouds Iridescent polar stratospheric cloud at sunset over Aberdeen, Scotland Cloud iridescence, seen above the clouds covered with grey clouds, Pondicherry, India. Cloud iridescence or irisation is a colorful optical phenomenon that occurs in a cloud and appears in the general proximity of the Sun or Moon.
Pinctada albina (Lamarck, 1819) – Shark Bay pearl oyster; Pinctada capensis (Sowerby III, 1890) Pinctada chemnitzii (Philippi, 1849) Pinctada cumingii (Reeve, 1857) Pinctada fucata (Gould, 1850) – Akoya pearl oyster – now accepted as Pinctada fucata martensii ; Pinctada galtsoffi Bartsch, 1931; Pinctada imbricata Röding, 1798 – Gulf ...
The puffbirds are related to the jacamars and have the same range, but lack the iridescent colors of that family. They are mainly brown, rufous, or gray, with large heads and flattened bills with hooked tips. The loose abundant plumage and short tails makes them look stout and puffy, giving rise to the English common name of the family.