In 2011, the report “Keto and Tilikum Express the Stress of Orca Captivity” by former SeaWorld trainers Dr. Jeffrey Ventre and John Jett exposed that infections caused by tooth damage are one reason why captive orcas often die at a young age.
Nana, a bottlenose dolphin who had been held in captivity for over 40 years, has died at the Shimoda Aquarium in Shizuoka, Japan.
An autopsy will be carried out to determine her cause of death. Last month she became the longest surviving dolphin in captivity in Japan after 42 years and 10 months in confinement.
She was captured off the coast of Ito in 1974 and during her time in captivity gave birth to eight calves according to local reports.
Some species of whales and dolphins can migrate many thousands of miles, travelling through the national waters of a number of different countries to get to their destinations.
A bottlenose dolphin called Bodie has died at the Dolphinaris marine park in Scottsdale, Arizona, barely a year after the controversial park opened.
A statement from the park said that the dolphin was suffering from a rare muscle disease.
The proposal to establish the desert-based swim-with facility was widely condemned by WDC and others. The owners also have several other captive facilities in Mexico.
Captivity giant, SeaWorld has announced that it intends laying off 350 employees following a slump in profits and low attendances at its captivity shows.
According to a spokesperson, the majority of the job losses will be administrative positions at the company's corporate office, as well as its parks in Orlando and San Diego.
A beluga whale called Crissy gave birth to a calf on Sunday afternoon at SeaWorld's marine park in San Antonio. It is not yet known what sex the new calf is.
Sadly, captive beluga whales have not faired well in recent years with several deaths in North American facilities. A newborn calf died shortly after it was born at SeaWorld Orlando in August. In November 2016, a mother and calf died within a few days of each other at the Vancouver Aquarium while in 2015 two young belugas died at SeaWorld and another two at Georgia Aquarium.
New research by Mexican marketing consultants suggests that the popularity of swimming with captive dolphins appears to be waning in the state of Quintana Roo. Studies of visitor numbers to facilities in locations such as Cancun and Riviera Maya have shown a steady decline in recent years with less than 10% of visitors to the region in 2016 taking part in such activities.