In theory biofuels can come from just about anything, and fish is no exception. In practice, there are a lot of obstacles to overcome in order to make a biofuel potentially viable. Fish are not used a lot right now as a source of biofuel oils, but there have been some interesting proposals. One is a variation on the idea of using algae as a source of fuel. Although that’s promising, it’s expensive to process the algae, and a company called LiveFuels, Inc. out of Texas suggested letting fish eat the algae, process it biologically, and then turn the fish themselves into biofuel base! The common reaction to this proposal is that it’s “not impossible”–not exactly a ringing endorsement. There’s also a proposal to use fish as fuel in Greenland, where small sharks clog the nets of Inuit fisherman who depend on fish for their main source of food. The meat of these particular sharks is toxic to humans so they are typically thrown away, but the Arctic Technology Centre has proposed turning the sharks (which account for half of the waste produced by certain Inuit towns) into biofuel mass. Not surprisingly, wildlife groups such as the World Wildlife Fund have said they’d rather see other projects undertaken first.
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