Doug Perrine / Atlantic spotted dolphin bubbles coming from blowhole whilst it whistles {Stenella ~(Non-ex).

Doug Perrine / Atlantic spotted dolphins underwater {Stenella frontalis} Bahamas, Caribbean Sea ~(Non-ex).

Kevin Schafer / Amazon river dolphin / Boto (Inia geoffrensis) underwater, Rio Negro, Amazonia, Brazil, split level, July

Kevin Schafer / Split level view of Amazon River Dolphin / Boto (Inia geoffrensis) in flooded forest, Ariau River, tributary of Rio Negro, Amazonia, Brazil, July

Mark Carwardine / Yangtze river dolphin {Lipotes vexillifer} captive, Wuhan, China, crit endangered

Jeff Rotman / Bottlenose dolphin (Tursiops truncatus) plays with sea cucumber, Red Sea

Chris & Monique Fallows / Common dolphin (Dephinus delphis) pod feeding on sardines (Sardinops oecllata) East London, South Africa.

Franco Banfi / Pink River dolphin / Boto (Inia geoffrensis) Acajatuba Lake, Negro River, Amazonas, Brazil

Mark Brownlow / Dusky dolphin {Lagenorhynchus obscurus} surfing at surface, Kaikoura, South Island, New Zealand

Alex Mustard / A pair of Atlantic spotted dolphins (Stenella frontalis) play with a snorkeller on a water scooter over a shallow sand bank. Sandy Ridge, Little Bahama Bank, Bahamas. Tropical West Atlantic Ocean.

Jeff Rotman / Snorkeler holding Sea Cucumber (Holothuria edulis) swimming with wild Bottlenose Dolphin (Tursiops truncatus), Nuweiba, Egypt - Red Sea. Model released Model released.

Doug Perrine / Atlantic spotted dolphins at surface {Stenella frontalis} Bahamas, Caribbean Sea ~(Non-ex).