Is it morally and ethically sound to hold animals captive for human benefit?

Gathering data documentary: Blackfish based on Tilikum  male orca largest orcas in captivity (22 feet) dyeing of chronic lung infection  in SeaWorld showed sighs of zoochosis died the summer of 2015 in the wild orcas live 80 years, males live up to 100 years in captivity they live 7 years 2007 

How different animals behave in their natural environments veers captivity.     Use different environments 1.      Rain-forests  2.      Desert  3.      Grassland  4.      Marine 5.   zoos 6.   safari  7.   aquariums Ethics of animals in labs                 http://www.bbc.co.uk/ethics/animals/using/experiments_1.shtml Ethics of animals in zoos                 https://www.avma.org/news/javmanews/pages/021201d.aspx Ethics of animals in safaris                 https://www.lessonslearnedabroad.com/blog/are-safaris-ethical Aquarium ethics                 https://www.gvi.co.uk/blog/ethics-aquariums-sea/     Compare the overall...

Extended Project Qualification – Initial Plan                                                                                                                                                               ...