The Jellyfish Entrepreneur
Hmmm. I don't know where they are in terms of sentience, but I kinda feel sorry for the jellyfish. It's the main reason I don't keep pets of any sort, but particularly fish. I love aquaria, but even the truly huge ones don't seem large enough - take the Lisbon Oceanário for example - hard not to feel sorry for that one Sunfish (maybe a metre across) just swimming in circles around a huge cylindrical tank.<p>Keeping cephalapods would be a great engineering challenge, in terms of what's necessary to make a viable habitat, but it seems so cruel given their apparent intelligence. Perhaps these things shouldn't be cheap?