Moira Donohue - National Geographic Kids Chapters - My Best Friend is a Dolphin!

First, they made a special plastic screen. The screen was clear, so the dolphins could see through it. Using a target pole, they taught three dolphins to swim to the screen. Then a trainer dove on the other side of the screen. He gave hand signals for behaviors the animals knew. The trainer would signal for a spin or a wave. Once the animals showed they knew the behaviors, it was time to darken the screen. That made it harder for them to see the signal. Eventually, Tim made the screen completely dark. Now the dolphins couldn’t see the diver with their eyes. They had to use echolocation to “see” his signal. Pretty soon, they understood. Next, Tim used a computer to give him signals in a random order. He told the trainer who was hidden behind the screen what signal to give. The dolphins had to read the diver’s signal and perform the right action. All three passed the test. One dolphin got it correct more than 90 percent of the time. It was Kelly, of course!

Текст предоставлен ООО «ЛитРес».

Прочитайте эту книгу целиком, купив полную легальную версию на ЛитРес.

Безопасно оплатить книгу можно банковской картой Visa, MasterCard, Maestro, со счета мобильного телефона, с платежного терминала, в салоне МТС или Связной, через PayPal, WebMoney, Яндекс.Деньги, QIWI Кошелек, бонусными картами или другим удобным Вам способом.