Maya, a recently departed Atlantic bottlenose dolphin who lived for 18 years in the Inner Harbor facility. Photo courtesy of National Aquarium.

One of Baltimoreโ€™s last remaining resident dolphins was euthanized after suffering from health issues the last several months, the National Aquarium announced today.

Maya, an Atlantic bottlenose dolphin born in May 2001 and raised in captivity at the aquatic attraction downtown, died after showing signs of illness starting in March, according to a release.

Staff began caring for her after she started losing her appetite, and gave her โ€œfluids supplemented with vitamins, electrolytes and medications, including antibiotics.โ€

It at first seemed to be working, but in mid-April veterinarians found she had inflammation throughout her body and digestive issues stemming from her liver not functioning properly. They ran tests, got her a liver biopsy and consulted with marine mammal experts around the country. But her health declined further over the last several days, to the point on Saturday where she couldnโ€™t keep food down and had elevated breathing.

โ€œDespite their best efforts, Maya was unable to recover and in the interest of the highest level of animal welfare, the difficult decision was made to euthanize Maya yesterday so that she did not endure additional pain or suffering,โ€ the release said.

The aquarium celebrated her legacy, including the fact that  she reached millions of members, children visiting with school groups and other guests as part of the facilityโ€™s small dolphin colony.

โ€œMaya was a cherished member of our National Aquarium family, and we are heartbroken to lose her,โ€ said aquarium CEO John Racanelli in a statement. โ€œWe have been deeply moved by the outpouring of support from the community and appreciate everyoneโ€™s compassion during this difficult time for our staff, our dolphins and our guests.โ€

She was among the eldest of seven dolphins still housed at the popular aquarium downtown, junior to her half-sisters Chesapeake, 26, and Spirit, 18.  The others are Jade, 20; Beau, 14; Foster, 11; and Bayley, 10.

Chesapeake was also having some health issues earlier this year, the aquarium said in February.

Mayaโ€™s body is being sent Johns Hopkins for a full animal autopsy โ€œto better understand the underlying causes of Mayaโ€™s illness,โ€ todayโ€™s announcement said.

The aquarium has been planning to relocate its dolphins from Inner Harbor Pier 4 to a first-of-its-kind North American animal sanctuary for several years, but Raccanelli said several months ago that theyโ€™ve encountered issues finding a place thatโ€™s both economical for the institution and suitable for the dolphins.

They were exploring the Florida Keys, but have broadened the search to include Puerto Rico, he said earlier this year. The effort is estimated to cost some $15 million.

โ€œIt might be an extra year,โ€ he said in April, referring to the originally set 2020 deadline. โ€œWe want to do it right.โ€

Ethan McLeod is a freelance reporter in Baltimore. He previously worked as an editor for the Baltimore Business Journal and Baltimore Fishbowl. His work has appeared in Bloomberg CityLab, Next City and...