Baby dolphin dies during performance after being 'overworked'

A baby dolphin who was only nine days old reportedly died during a performance at a water park in Bulgarian.

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The dolphin died in front of a packed audience, with spectators describing staff hurriedly ushering them out of the arena. According to The Sun, the dolphins stopped playing and performing tricks.

It is reported that dolphins at the park are forced to perform four times a day. Despite his age, the baby dolphin was forced to perform with the adult dolphins. 

Here is a photo of the baby dolphin with his mother swimming in a small tank at the park.