A dolphin was filmed repeatedly ramming its head against the wall of its tank while it was being kept in an aquarium in Singapore. Footage of the allegedly distressed animal captured at Resorts World Sentosa (RWS) S.E.A. Aquarium in Sentosa Island emerged on social media last week. The video filmed by a worried member of the public last year, was then sent to US-based animal campaign group, Empty The Tanks ...