Chelsea was captured from the Gulf of Mexico in 1983 and spent the next four decades performing for crowds at Six Flags Discovery Kingdom in California.

She died last month, at over 40 years old, after years of declining health. Nearly her whole life was spent in a pool, even though dolphins in the wild can travel up to 60 miles a day in open water.

Chelsea was bred repeatedly at the park, and two of her six calves died before they had a real chance at life.

Federal inspectors have cited Six Flags Discovery Kingdom for Animal Welfare Act violations, including poor water quality that contributed to the deaths of two young dolphins. Visitors can still pay to swim with, touch, and hold the dolphins who remain there, and shows continue in which trainers stand on the animals' faces for entertainment.

Six Flags CEO John Reilly can end the swim-with-dolphins program and move the surviving dolphins to accredited seaside sanctuaries, where they could live in real sea water instead of a pool built for a show schedule.

Chelsea never got the chance to live any other way. Sign the petition to demand Six Flags retire its remaining dolphins to real ocean sanctuaries, before another one dies in that pool.