Aquafarming may date back as early as 6000 B.C. to the indigenous peoples of Australia who relied heavily on eels as a food source. For over 3000 years China has shown itself to be the leader in industrial fish farming with some recent statistics stating that the country was responsible for around 70% of world production in 2005.
Being the fastest growing food production sector in the world, aquaculture shows great promise for helping to alleviate poverty and hunger in the world. On the other hand, the world's heavy reliance upon it has shown its many negative effects on both the natural fish populations as well as the farmed fish themselves. Due to high degrees of waste and unsustainable practices, aquaculture's efficiency is often questioned. Feed for the commercially raised fish is regularly extracted from wild-caught fish, leading some to believe that the only way this type of fish farming can prove to be a viable alternative to fishing is if the majority of creatures cultivated are herbivorous.
Carnivores
Cameroon clawless otter
North american otter
La plata otter
Huillin
Common otter
Speckle-throated otter
Hairy-nosed otter
Indian smooth-coated otter
Giant brazilian otter
Dugongs, manatees, and sea cows
American manatee
Read more at the list of biomes of the world...