The largest dolphin roundup in recent history has come to an end in Taiji, Japan, as the "lucky ones" not selected for captivity or slaughter have been driven back to sea in the same fashion that they were first corralled into the infamous killing cove.
All said, 52 dolphins were taken captive (to be sold to international aquariums) and 41 were slaughtered for their meat. Knowing what we know about the social nature and emotional capacity of dolphins, it's fair to estimate that many of the released ones will die from trauma and despair.
Of the 52 captives, a killed spirit will also be their "inexplicable" cause of death.
This assertion may seem bold, but as a former marine mammal trainer of 12 years at Marineland of Canada, I can attest to the grief and suffering these sentient beings experience. Many of the wild-caught animals we received did not make the transition into captivity. No amount of medical treatment could alleviate their grief, and no blood work could reveal its source. Simply stated, they no longer had the will to live -- especially without their families.