I found this research study which revealed that bottlenose dolphins live just as long or longer in American zoos and aquariums. I think the Dolphin Research Center (which looks after captive dolphins themselves) had a role in this study, so the research could be biased and therefore might not tell the full story. Here's the link: http://doi.wiley.com/10.1111/mms.12601 This got me thinking - which cetaceans (if any) tend to do well in captivity compared to their wild counterparts? By "well" I mean having low mortality rates and long life expectancies compared to wild populations and demonstrating good welfare (exhibiting natural behaviors, etc). Or, based on ongoing research and statistical trends, are there any species of cetaceans that don't do well in captivity now but have the potential to thrive in the future? I've believed that cetaceans fair poorly under human care for quite some time now, but it would be great to know if some species have good health and quality of life in captivity.