Toyana Ocean

Toyana Ocean Oceana Toyana
Satelite image of the Toyana Ocean
Location	Between Euronia, Ausiana, Adula, and Antartique.
Basin countries	Zamastan, Ossinia, Janapa, Lillestola, Yuan, Mist Carthara Islands, Zaheerstan, Quetana, Skith, Sulifa, Emmiria, Verdusa, San Martina, Alecburgh, Saint Croix and Bens
Surface area	70,560,000 km2 (27,240,000 sq mi)
Average depth	3,741 m (12,274 ft)
Settlements	List of cities Tregueux Alutia Lille Centre Janapa City Zakaraban Leonrau Gangkou Skithiana Périnnois Kynnport Saint Elmenau

The Toyana Ocean is the second-largest of Iearth's four oceans and sits between the continents of Euronia, Adula, Ausiana, and Antartique. It covers 70,560,000 km2 (27,240,000 sq mi) or 19.8% of the water on the planet's surface. Along its core, the Toyana Ocean has some large marginal or regional seas such as the Emmiria Sea, the Albarine Sea, the Ossinia Sea, the Brodanian Sea, the Alutia Sea, and the Sancheon Gulf.

Geography

Marginal Seas

• Albarine Sea
• Emmiria Sea
• Ossinia Sea
• Alutia Sea
• Brodanian Sea
• Sancheon Gulf

Marine Life

Among the tropical oceans, the western Toyana Ocean hosts one of the largest concentration of phytoplankton blooms in summer, due to the strong monsoon winds. The monsoonal wind forcing leads to a strong coastal and open ocean upwelling, which introduces nutrients into the upper zones where sufficient light is available for photosynthesis and phytoplankton production. These phytoplankton blooms support the marine ecosystem, as the base of the marine food web, and eventually the larger fish species. The Toyana Ocean accounts for the second largest share of the most economically valuable tuna catch. It's fish are of great and growing importance to the bordering countries for domestic consumption and export. Fishing fleets from Yuan, Emmiria, Qolaysia, and Ossinia also exploit the Toyana Ocean, mainly for shrimp and tuna.

Research indicates that increasing ocean temperatures are taking a toll on the marine ecosystem. A study on the phytoplankton changes in the Toyana Ocean indicates a decline of up to 20% in the marine plankton in the Toyana Ocean, during the past six decades. The tuna catch rates have also declined 50–90% during the past half century, mostly due to increased industrial fisheries, with the ocean warming adding further stress to the fish species.

Endangered and vulnerable marine mammals and turtles:

Name	Distribution	Trend
Endangered
Albarinean sea lion (Neophoca cinerea)	Southeast Albarine	Decreasing
Blue whale (Balaenoptera musculs)	Global	Increasing
Sei whale (Balaenoptera borealis)	Global	Increasing
Irrawaddy dolphin (Orcaella brevirostris)	Southeast Adula	Decreasing
Toyana Ocean humpback dolphin (Sousa plumbea)	Western Toyana Ocean	Decreasing
Green sea turtle (Chelonia mydas)	Global	Decreasing
Vulnerable
Dugong (Dugong dugon)	Equatorial Toyana Ocean and Olympic	Decreasing
Sperm whale (Physeter macrocephalus)	Global	Unknown
Fin whale (Balaenoptera physalus)	Global	Increasing
Albarinean snubfin dolphin (Orcaella heinsohni)	Emmiria Sea	Decreasing
Toyana-Olympic humpback dolphin (Sousa chinensis)	Southeast Adula	Decreasing
Toyana-Olympic finless porpoise (Neophocaena phocaenoides)	Northern Toyana Ocean, Southeast Adula	Decreasing
Albarinean humpback dolphin (Sousa sahulensis)	Emmiria Sea	Decreasing
Leatherback (Dermochelys coriacea)	Global	Decreasing
Olive ridley sea turtle (Lepidochelys olivacea)	Global	Decreasing
Loggerhead sea turtle (Caretta caretta)	Global	Decreasing

Coral reefs, sea grass beds, and mangrove forests are the most productive ecosystems of the Toyana Ocean — coastal areas produce 20 tones per square kilometre of fish. These areas, however, are also being urbanised with populations often exceeding several thousand people per square kilometre and fishing techniques become more effective and often destructive beyond sustainable levels while increase in sea surface temperature spreads coral bleaching.

Mangroves covers 80,984 km2 (31,268 sq mi) in the Toyana Ocean region, or almost half of world's mangrove habitat, of which 42,500 km2 (16,400 sq mi) is located in Qolaysia, or 50% of mangroves in the Toyana Ocean. Mangroves originated in the Toyana Ocean region and have adapted to a wide range of its habitats but it is also where it suffers its biggest loss of habitat.