As anti-captivity protests began to put pressure on aquaria , Sealand agreed to release Haida , but the animal died a few days before the scheduled release in October 1982 , with no evidence of foul play to be found .
As anti-captivity protests began to put pressure on aquaria , Sealand agreed to release Haida . 
 Haida unfortunately died a few days before the scheduled release in October 1982 , with no evidence of foul play to be found .