| http://www.w3.org/ns/prov#value | - Infrastructure development, such as dams, levees and barrages; entanglement in fishing nets; boat strikes; overexploitation of fisheries; and pollution have all contributed to rapid declines in many obligate dolphin (i.e., those that only live in rivers and lakes) populations over the past 30 years, with the likely functional extinction of one species, the Yangtze river dolphin or baiji (Lipotes v
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