Echolocation Demo Explained! ⤵️ Before we use the soft eye cups, we train with them to ensure the dolphins are excited to engage in activities that stimulate their brains and challenge their cognitive abilities. Our dolphins can easily remove these, and always have the choice whether to participate. When the soft eye cups are placed gently over Hua’s eyes, he can’t see or react to the signal above water. Underwater, however, Hua easily uses echolocation to ‘see’ with stunning accuracy. By emitti