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They not only can repeatedly blow bubble rings but have learned to play with them. They interact with other dolphin's bubble, at times breaking it up before another dolphin uses it. Amazing!
|Kanzi- from Time.com|
Kanzi can understand and use compounded symbols to express ideas and even communicate time differences, describing kale which was tough and hard to chew as "slow lettuce". He asks for pizza by combining the symbols for bread, cheese and tomato, demonstrating also his acquired gourmet tastes.
If you can't find the magazine, I think you will enjoy the outtakes above and this video.