Georgia Tech Students Teach Zoo Elephants to Make Music

Elephants are brilliant problem solvers, but life in a zoo doesn't always challenge their massive brains the way the wild does. Zoo Atlanta already had a concrete wall with holes where Kelly, Msholo, Tara, and Titan could poke their trunks to find treats, but Georgia Tech Ph.D. student Arianna Mastali wondered if she could make it even better.

Working with the Georgia Tech Animal Lab, Mastali created something remarkable. She installed cameras that detect when an elephant's trunk enters a hole, triggering a speaker to play low-frequency tones. The sounds aren't very loud to humans, but elephants hear and feel frequencies we can't, making the experience deeply engaging for them.

The first version didn't go so well. Mastali tried using sensors inside PVC pipe inserts, but the elephants' powerful trunks broke them within days. She didn't give up.

Instead, she switched to cameras and computer vision technology, keeping the system completely outside the wall where curious trunks couldn't destroy it. The new design gave elephants control without risking their habitat or the equipment.

Kirby Miller, senior elephant caretaker at Zoo Atlanta, noticed the change immediately. Before the audio system, elephants only approached the wall when they knew food was waiting. After installation, they started exploring just to hear the sounds.

"Tara had her trunk in one of the holes, just listening to the sound," Miller said. The team wasn't offering any treats at the time, proving the elephants genuinely enjoyed the experience.

The Ripple Effect

The results speak volumes about what animals need to thrive. Over seven days before installation and seven days after, Mastali tracked dramatic changes. The elephants approached the wall 176% more often and spent 71% more time there.

The less dominant females, who previously held back when food was involved, became the biggest fans. They now had a way to engage with their environment on their own terms, without competing with the herd's stronger personalities.

Mastali's work shows how technology can improve animal welfare without disrupting natural behaviors. By giving elephants choice and control, the system lets them decide how to interact with their space, leading to happier, more mentally stimulated animals.

Zoo Atlanta's elephants are now composers of their own soundtrack, one trunk poke at a time.