Very sad news - Calypso passed away last night 
From the aquarium's facebook:
"We are deeply saddened to share that Calypso, our beloved green sea turtle, passed away unexpectedly Sunday night.
Calypso came to the National Aquarium in 2002, after stranding in the Long Island Sound with an infected left flipper that was later amputated. Because of this life-saving procedure, Calypso was deemed non-releasable. For nearly 20 years, Calypso thrived at the Aquarium, growing from six pounds at stranding to nearly 500 pounds.
Calypso was in good health throughout her life and displayed no clear signs of illness or distress in the days leading up to her death. At this time, her cause of death remains unknown. A full necropsy will be performed to help us gain further insights into what may have caused her sudden passing.
Calypso will be profoundly missed by Aquarium staff, volunteers, and visitors alike. For years, Calypso has been an Aquarium icon who encapsulated the wonder of the ocean for the millions who had the opportunity to see her—and did the same for the staff who saw her daily. She has always inspired love, affection and deep respect.
We thank you for your compassion and well wishes as we mourn her passing."
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From the aquarium's facebook:"We are deeply saddened to share that Calypso, our beloved green sea turtle, passed away unexpectedly Sunday night.
Calypso came to the National Aquarium in 2002, after stranding in the Long Island Sound with an infected left flipper that was later amputated. Because of this life-saving procedure, Calypso was deemed non-releasable. For nearly 20 years, Calypso thrived at the Aquarium, growing from six pounds at stranding to nearly 500 pounds.
Calypso was in good health throughout her life and displayed no clear signs of illness or distress in the days leading up to her death. At this time, her cause of death remains unknown. A full necropsy will be performed to help us gain further insights into what may have caused her sudden passing.
Calypso will be profoundly missed by Aquarium staff, volunteers, and visitors alike. For years, Calypso has been an Aquarium icon who encapsulated the wonder of the ocean for the millions who had the opportunity to see her—and did the same for the staff who saw her daily. She has always inspired love, affection and deep respect.
We thank you for your compassion and well wishes as we mourn her passing."
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