dolphin

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Gray’s paradox was originated by the zoologist James Gray in 1936 (J. Exp. Biol. 13: 192–199, 1936). The paradox questioned how a dolphin is able to swim fast (~10.1 meters per second according to his calculations) with what he saw as a limited ability to generate that much power. Therefore, he concluded that dolphins must have…

A new documentary from BBC called “Spy in the Pod” has captured what they claim to be footage of dolphins using puffer fish to reportedly “get high”. According to a quote from the Daily Mail, “Zoologist and series producer Rob Pilley said that it was the first time dolphins had been filmed behaving this way.”…

Don’t forget the veteran dolphins

In honor of Veteran’s Day, we must not forget to thank the dolphins (and more recently sea lions) that have been active members of the US Military. The US military used dolphins trained to find and disarm underwater mines in the Iraq War. Eight dolphins served as the first marine mammals in active combat as…

A virus is to blame for the deaths of hundreds of bottlenose dolphins along the East Coast of the United States:

  Another reason to marvel at dolphins. As a follow up to the previous blog on dolphins calling each other by name, new research from Dr. Jason Bruck at the Institute for Mind and Biology (University of Chicago) shows that dolphins have the longest memory known in animals. In addition to Kai, shown above, a…

  A new study published in the Proceedings of the National Academy of Sciences provides evidence that bottlenose dolphins (Tursiops truncatus) use “signature whistles” to identify and call each other by “name”.   Dr. Vincent Janik at the Scottish Oceans Institute, University of St. Andrews and colleagues recorded the individual whistles of wild bottlenose dolphins traveling…

A higher than normal mortality rate for bottlenose dolphins (Tursiops truncatus) in the Gulf of Mexico during 2011 has been found to correspond with the Deepwater Horizon oil spill as well as colder weather conditions during 2010 leading to an influx of colder water into the Gulf from snowmelt. From January through April 2011, 186 bottlenose…