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The Banda Sea (, ; ; ) is one of four that surround the of , connected to the , but surrounded by hundreds of islands, including , as well as the and . It is about 1000 km (600 mi) east to west, and about 500 km (300 mi) north to south.


Extent
The International Hydrographic Organization (IHO) defines the Banda Sea as being one of the waters of the East Indian Archipelago. The IHO defines its limits as follows:
On the North The Southern limits of the and the Western and Southern limits of the .

On the East. From Tg Borang, the Northern point of Noehoe Tjoet [], through this island to its Southern point, thence a line to the Northeast point of Fordata, through this island and across to the Northeast point of Larat, (), down the East coast of Jamdena [] Island to its Southern point, thence through Anggarmasa to the North point of Selaroe and through this island to Tg Aro Oesoe its Southern point ().

On the South. A line from Tanjong Aro Oesoe, through Sermata to Tanjong Njadora the Southeast point of Lakov [Lakor, sic] () along the South coasts of to Tanjong Toet Pateh, the West point of Leti, thence a line to Tanjong Sewirawa the Eastern extremity of and along the North coast as far as longitude 125° East.

On the West. From a point on the North coast of Timor in 125° East up this meridian to , thence round the East point and along the North coasts of the Alor, , and Islands and thence across the Northern end of Flores Strait to Tanjong Serbete the Eastern extreme of , thence a line from its Northern point () to Kalaotoa Island () and through the chain of islands lying between it and the South point of , through this island and across the Strait to Tanjong Lassa, (), thence along the Southern limit of the Gulf of Boni and up the East coast of Celebes to Tanjong Botok ().

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Geography
Islands bordering the Banda Sea include to the west, , , to the north, the Aru Islands, , and to the east, and the Barat Daya Islands and to the south. Although the borders of the sea are hazardous to , with many small rocky islands, the middle of the sea is relatively open. Island groups within the sea include the . Some islands in the Banda Sea are active volcanoes including Gunung Api and Manuk in the Banda Islands.


Geology

Plate tectonic activities in Banda Sea
The Banda arc is famous for its 180° curvature and is, in Timor, generally agreed to be the product of a collision between a volcanic arc and the Australian continental margin. The Banda Sea occupies the main portion of the Banda Sea plate. The southern margin of the sea consists of above zones. To the east of the is the which lies south of , the Tanimbar Trough south of the and the east of the Aru Islands. These trenches are the subduction zone of the Indo-Australian plate beneath the Banda Sea plate, where the Indo-Australian plate moves northwards. Fore-arc sediments progressively carried northwards by the Indo-Australian plate have been folded and faulted forming Timor Island. To the northeast lies which overlies the subduction of the Bird's Head plate of West Papua. The deepest point of the sea, , is an exposed oceanic fault and the world's deepest basin, with depth more than .


Earthquakes
Earthquakes are very frequent in the area, due to the confluence of three tectonic plates – Eurasian, Pacific and Indo-Australian plates.
  • 1852 Banda Sea earthquake
  • 1938 Banda Sea earthquake
  • 2006 Banda Sea earthquake


Ecology
The Banda Sea is a , as defined by the World Wildlife Fund. It is part of the region, which has the greatest diversity of coral reef species in the broader .

The islands surrounding the Banda Sea are part of , a biogeographical region that contains the islands lying between Asia and Australia which haven't been joined to either continent. The islands of Wallacea are home to a mix of plant and animal species from both tropical (the Indomalayan realm) and the Australasian realm which includes Australia and New Guinea.

The islands are divided among several terrestrial ecoregions. The northern islands of Sulawesi, Buru, and Seram constitute separate tropical moist forest ecoregions. The islands south of the Banda Sea are among the driest in Indonesia, and are home to tropical dry forests. The Timor and Wetar deciduous forests ecoregion includes Timor and Wetar. The Lesser Sunda Islands from through and to constitute the Lesser Sundas deciduous forests ecoregion.

The Tanimbar Islands, Kai Islands, and Barat Daya Islands (except for Wetar) in the southeastern Banda Sea form the Banda Sea Islands moist deciduous forests . These islands are covered in mostly-intact rain forest, and home to a number of plants and animals including twenty-one bird species, a very high number for this small ecoregion. There are only twenty-two native mammals on these islands, including the rare (Thylogale brunii) and Indonesian tomb bat ( Taphozous achates), and the endangered bat (Myotis stalkeri). The birdlife is threatened by egg collectors and even more by cats and rodents that have been introduced to the islands. in the Tanimbar Islands is an example of a large and fairly unspoilt habitat and is a protected area. The base for visiting these islands is by plane or ship from to the north. The Banda and Kai Islands, although remote, are visited by tourists for snorkelling and for their unspoilt beaches. Various cetacean species have been recorded including either or both and pygmy blue whalesWildiaries. BLUE WHALES OF THE BANDA SEA & FORGOTTEN ISLANDS. Retrieved on 24 September 2017Edwards J.. An Indo-Pacific Bottlenose Dolphin bow riding on the wake of a gigantic Blue Whale. . . Retrieved on 24 September 2017Sarah.

2015. [http://smallgirlbigtravels.blogspot.jp/2015/11/sailing-through-banda-sea.html Sailing Through the Banda Sea]. Small Girl Big Travels: Field Notes. Retrieved on 24 September 2017 and Omura's whales.Ogata J. M.. 2017. [http://www.mermaid-liveaboards.com/article/bio-diversity/ambon-banda-islands-raja-ampat/ Ambon – Banda Islands – Raja Ampat] . Mermaid Liveaboards. Retrieved on 24 September 2017
     


Further reading
  • Ponder, H. W. (1944) In Javanese waters; some sidelights on a few of the countless lovely, little known islands scattered over the Banda sea & some glimpses of their strange & stormy history London, Seeley, Service & Co. ltd.
  • Patrick D. Nunn (1994) Oceanic Islands Oxford, Great Britain, Blackwell

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