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Two dolphins twisting playfully in Mekong River in Kratie province, some 186 miles (300km) north-east of Phnom Penh. Vietnam urged Laos to halt construction of a 3.5bn hydropower dam on Mekong River pending further study, environmental activists said on Friday
Amazon Basin, Brazil Photograph by Kevin Schafer, National Geographic Freshwater dolphins are among the threatened species protected within the Central Amazon Conservation Complex, a biologically diverse habitat that became a World Heritage site in 2000. Covering nearly 15 million acres (6 million hectares), the site makes up the Amazon Basin’s largest protected area.
Hectors Dolphins, Kaikoura, South Island, New Zealand