Winter the tailless bottlenose dolphin at Clearwater Marine Aquarium

Winter the Dolphin: The Tail She Never Had Changed Everything

In 2005, a baby bottlenose dolphin was found tangled in a crab trap off the coast of Florida. The trap line had cut so deep into her tail flukes that she was losing blood. By the time she reached the Clearwater Marine Aquarium, her tail was beyond saving. Surgeons amputated most of it. She was given less than a week to live.

She did not die in a week. She lived for another eighteen years, and along the way she became one of the most documented animals in medical history.

The Prosthetic

Dolphins swim by moving their tails up and down in powerful vertical strokes. Without a tail, Winter compensated by moving her body side to side, the way fish swim. The lateral motion worked well enough to keep her alive. It also put severe, progressive stress on her spine.

Kevin Carroll, a prosthetist at Hanger Clinic who had spent his career designing limbs for human patients, heard about Winter and volunteered to help. The challenge was not just fitting a prosthetic — it was attaching one to a marine mammal whose skin is unlike any tissue a prosthetics lab had ever worked with. Standard silicone caused pressure sores within hours. The team developed a gel liner, now called the WintersGel, that distributes pressure across the skin without causing damage.

The prosthetic tail fin worked. Winter began swimming with the natural up-and-down motion her body required. The spinal progression slowed.

What Followed in Medicine

WintersGel became a standard material in human prosthetics. Clinicians began using it in socket liners for amputees who had previously had no good options for sensitive skin or residual limb tissue. The dolphin's problem had produced a human solution.

Children with limb differences began visiting the aquarium. Some had never worn a prosthetic because the technology was painful or ill-fitting. Their parents reported that Winter's story changed how they talked about the prosthetic — from something to be endured to something that was just a different way of moving. Several orthopedic and prosthetic teams cited Winter as the catalyst for outreach programs that brought children into clinical settings who had previously refused to engage.

The Films

A 2011 film, Dolphin Tale, dramatized Winter's rescue and rehabilitation. A sequel followed in 2014. The films were shot partly at the Clearwater Marine Aquarium, and Winter appeared in both as herself. The aquarium became one of the most visited marine facilities in the United States after the first film's release.

November 11, 2021

Winter developed a gastrointestinal condition that did not respond to treatment. She died on that date at the Clearwater Marine Aquarium, surrounded by the staff who had cared for her for sixteen years. She was eighteen years old, in the upper range of age for a wild dolphin and remarkable for one who had survived what she had at two months old.

The WintersGel liner is still in clinical use. The children who visited the aquarium grew up. Some of them, by now, are wearing prosthetics of their own.

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Sources

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