Though the exact cause of the newborn dolphin's death is unclear, Laura Bridgeman, from the International Marine Mammal Project, says that captivity itself is likely to blame - raising the possibility that it was an act of mercy on the part of Lulu, knowing what awaited her.
"Aquarium officials like to explain this as the result of first-time mothers who simply don't know how to be good parents. But that logic is highly questionable," Bridgeman writes. "A more likely reason for this type of violence lies within the traumatic scars of being separated from one's family, watching and listening to them die one by one, and being removed permanently from one's home. Or it could be that Lulu did not want her child to endure the endless pain and suffering of captivity."