Why doesn't SeaWorld set their orcas free?

The orcas remaining in captivity cannot be set free. You might ask yourself why? Well, sadly these animals are used to the lifestyle they have in captivity. If they were to be set free they wouldn’t stand a chance. Whether born in the wild or in captivity they have more spent their lives looked over for. They are used to a routine like being feed, swimming a certain distance, may not be social etc. So it's sad to know that the remaining orcas in captivity will have to spend the rest of their life there. But we can still enforce laws and sign petitions so that there time won’t be as miserable and so for the future generations of orcas won’t have to live in fear or be taken away to be used a entertainment.