River dolphins of that colour can be spotted in the Amazon River.

BBC: Into Peru��s Amazonian heart of darkness

In the Bolivian forest, the investment is at least protecting the river dolphins, jaguars, caymans and countless bird species which thrive in the park.

BBC: Carbon-trading in Bolivia

This newfound reptile appears to be the first known freshwater mosasaur, an animal comparable to modern river dolphins now seen in the Amazon, Ganges and Yangtze rivers.

MSN: Huge 'sea monster' ruled ancient rivers

For private hire and sleeping twelve, head out cayman tracking by motorized canoe, swim with pink river dolphins - the boto rosa -- or try a spot of piranha fishing before taking to the skies in a Cessna Amphibian to experience the jungle like a toucan.

FORBES: First Class Amazon River Cruise

While Bangladesh currently supports relatively large populations of Ganges river dolphins and Irrawaddy dolphins, conservationists argue that it's crucial to address the threats they face now, while the potential for long-term survival of both species is still relatively high in comparison to other areas in Asia.

BBC: NEWS | South Asia | Bangladesh's majestic dolphins at risk

The warnings are in place for the River Char at Dolphins River Caravan Park, the River Wey from Upwey to Weymouth South Winterbourne Valley, Lower Frome from Dorchester to East Stoke and from East Stoke to Wareham.

BBC: Landslip at Lyme Regis threatens beach chalets

Also nearby is its water-park sister, Aquatica, and the worlds-away Discovery Cove, where a limited number of guests enjoy a day of lounging on a private beach, swimming with the dolphins and floating along the lazy river through the bird aviary.

BBC: Lonely Planet's top five day trips from Miami