Tilikum was an orca whale at SeaWorld, and being at SeaWorld made him mad and depressed...he was taken from his family when he was 2 years old.. his story is a little worse than that but if you feel you can stomach it watch 'Blackfish' a documentary about his life~ orca whales are self aware just like us and studies proved this and they even have their own languages!! ^-^ So in captivity they get very stressed...And THANKYOU again I'm honestly enjoying these water related pictures lately