Electrocardiogram sensors attached to the dolphins monitored their heart rates, while another purpose-built device tracked the animals’ breathing, reports Brooks Hays for United Press International.

A bottlenose dolphin was found shot to death with bullets lodged in its brain, spinal cord and heart and authorities are offering a reward for information on who did it.

Hundreds of dolphins, sea lions washing ashore in California 02:02. A bottlenose dolphin was found shot to death on a Louisiana beach last month and now authorities are offering a $20,000 reward ...

Dolphins seem to adjust their heart rates as they dive to avoid decompression sickness, also known as the bends, which is caused by sudden changes in pressure.

Several dolphins got stuck by the wharf in Heart's Delight-Islington, N.L., on Friday. Some have since been freed by rescue crews, but others are still wading in the ice.

According to a NOAA statement, there were "multiple bullets lodged" in the juvenile bottlenose dolphin's "brain, spinal cord, and heart", consistent with being shot with a firearm.

The environmentalist reaches into the body of the dolphin, tears out its heart, cuts meat from its back, and slices off one of its fins. He then proceeds to cook the pieces on a grill.

Dolphin spits out amazing heart-shaped bubble in this incredible wildlife photograph. Scot Lorraine Culloch couldn't believe her eyes when she saw the heartwarming greeting from the bottlenose mammal.

THE star of the ‘Dolphin Tale’ movies has died after she suffered suspected heart failure. Winter – a 16-year-old female bottlenose dolphin – lost her tail when she was just two months … ...