Should dolphins be kept in aquariums?

[xerx]

Dolphins and other cetaceans (like whales) are highly intelligent animals. As far as we know, at any rate.

They have an incredibly rich social life, to the point where they may even have culture. They have very large brains that can conduct incredibly sophisticated communication. They can problem-solve and use tools. They can pass the mirror test — a strong hint of self-awareness. Should we treat aquariums as a form of imprisonment?