At the Kolmården Wild Animal Park, dolphins like young Luna can now aim their echolocation beam at shapes on an underwater screen to indicate their choices and answer questions. The project is called ELVIS (The Echo Location Visualization and Interface System) and it’s currently being used to help the dolphins choose the types of fish they want to eat. Research Director Mats Amundin hopes that the system can someday help dolphins make more choices about toys or music, or even use it to express their emotions.

In the archives: More dolphin videos and orangutans that choose their lunches on an iPad.

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