December, Off the Florida Coast
In December 2005, a crab fisherman off the coast of Brevard County, Florida hauled in a line and found something unexpected: a dolphin calf, barely two months old, tangled in the trap rope. The line had wrapped around her tail fluke and cut off circulation. She was alive, but not by much.
Rescuers from Clearwater Marine Aquarium made the three-hour drive to the site. They loaded her into a transport tank and headed back to Clearwater. She weighed about 68 pounds. She had no name yet.
What the Rope Had Done
By the time the aquarium staff examined her, the damage was clear. The rope had been tight long enough that the tissue in her tail fluke could not be saved. Veterinarians amputated what remained. She was now a dolphin without the one appendage that dolphins are built around.
Dolphins swim by driving their tail up and down. Without it, she developed a side-to-side motion to compensate, the way fish swim. This kept her alive but put stress on her spine that would have caused lasting injury over time. The aquarium needed a solution, and fast.
Two Years of Fitting
The aquarium reached out to Hanger Prosthetics and Orthotics, a company that built limbs for human patients. Prosthetist Kevin Carroll had never worked on a dolphin. Nobody had. The first problem was attachment: how do you fit a prosthetic to wet, smooth skin on an animal that never holds still?
The team went through dozens of designs over two years. Every fitting session was a negotiation. Winter had to accept the device, swim with it, and not have it injure the skin it pressed against. Most attempts failed. They kept going.
The Polymer That Didn't Exist
The breakthrough came from the sleeve, the part that connected the prosthetic to Winter's body. Nothing on the market worked. A biomedical engineer named Dr. Joseph Romo developed a new polymer specifically for the project. They called it WintrEX, after her.
WintrEX was soft enough to not chafe Winter's skin, flexible enough to move with her, and durable enough to survive saltwater. After Winter's story became public, researchers adapted the polymer for use in human prosthetics. A material invented for a dolphin ended up helping human amputees. That was not the plan. It happened anyway.
The Aquarium She Filled
Winter lived at Clearwater Marine Aquarium until her death in November 2021. In that time, more than five million people visited the aquarium to see her. The aquarium, which had operated as a small regional facility before her arrival, expanded significantly to accommodate the crowds.
Two films were made about her story: "Dolphin Tale" in 2011 and "Dolphin Tale 2" in 2014. She played herself in both. Children who had lost limbs wrote her letters. Some of their parents later reported that meeting Winter had changed how their children thought about their own prosthetics. The aquarium staff started hearing this so often they made outreach to amputee communities part of the program.
November 2021
Winter became ill in late 2021 with a condition affecting her gastrointestinal tract. Aquarium veterinarians treated her for months before determining that surgery was necessary. She did not survive the procedure. She was about 16 years old.
The aquarium announced her death on November 11, 2021. The response was global. Letters and flowers arrived from dozens of countries. The staff held a memorial. Kevin Carroll, the prosthetist who had spent two years figuring out how to fit her first tail, was there. Winter had spent her entire life in one building, known by millions of people who had never been anywhere near Clearwater, Florida. That is its own kind of remarkable.
Field Notes
- Winter was found entangled in a crab trap line off Brevard County, Florida in December 2005, at approximately two months of age. The trap had cut off circulation to her tail fluke, which had to be amputated.
- Prosthetist Kevin Carroll of Hanger Prosthetics and Orthotics led a team that spent two years developing a prosthetic tail for Winter, working through dozens of failed designs.
- To attach the prosthetic, biomedical engineer Dr. Joseph Romo developed a new polymer called WintrEX, named after her. The polymer was later adapted for use in human prosthetics.
- Winter lived at Clearwater Marine Aquarium from 2005 until her death in November 2021. More than five million people visited the aquarium during her lifetime.
- Two major films, "Dolphin Tale" (2011) and "Dolphin Tale 2" (2014), were based on her story. Winter appeared in both, playing herself.
Support Clearwater Marine Aquarium
Clearwater Marine Aquarium is a nonprofit marine animal hospital dedicated to the rescue, rehabilitation, and release of injured marine life. Their work continues in Winter's memory, caring for dolphins, sea turtles, and other animals in need along Florida's Gulf Coast.
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