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The tucuxi (Sotalia fluviatilis), alternatively known in Peru bufeo gris or bufeo negro, is a species of freshwater dolphin found in the rivers of the Amazon basin.The word tucuxi is derived from the Tupi language word tuchuchi-ana, [citation needed] and has now been adopted as the species' common name.
When cooked, dolphin meat is cut into bite-size cubes and then batter-fried or simmered in a miso sauce with vegetables. Cooked dolphin meat has a flavor very similar to beef liver. [16] Dolphin meat is high in mercury, and may pose a health danger to humans when consumed. [17] Ringed seals were once the main food staple for the Inuit.
Dolphins captured in fishing nets are usually accidental, but dolphin oil is sought after as a fish lure, and thus fishermen may be motivated to kill caught dolphins. [19] Being nearly blind and relying on echolocation for navigation, river dolphins are also negatively affected by noise pollution from boats.
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Whaling largely targeted the collection of blubber: whalers rendered it into oil in try pots, or later, in vats on factory ships. The oil could serve in the manufacture of soap, leather, and cosmetics. [13] Whale oil was used in candles as wax, and in oil lamps as fuel. A single blue whale can yield a blubber harvest of up to 50 tons. [14]
A major restoration effort to open a new mouth between Chilika Lake and the Bay of Bengal in 2000 was successful in restoring the lake ecology and regulating the salinity gradient in the lake waters, which has resulted in increases in the population of Irrawaddy dolphin due to increase of prey species of fish, prawns, and crabs.
Stocks of the dolphin's prey declined drastically in the late 20th century, with some fish populations declining to one thousandth of their pre-industrial levels. [91] In the 1950s, the population was estimated at 6,000 animals, [92] but declined rapidly over the subsequent five decades. Only a few hundred were left by 1970.
Young fisherman with dolphinfish from Santorini, Greece, c. 1600 BCE (Minoan civilization). The mahi-mahi (/ ˌ m ɑː h i ˈ m ɑː h i / MAH-hee-MAH-hee) [3] or common dolphinfish [2] (Coryphaena hippurus) is a surface-dwelling ray-finned fish found in off-shore temperate, tropical, and subtropical waters worldwide.