Kiwi's robot dolphin could help Chinese aquariums

As Chinese zoos and aquariums grapple with new bans on wildlife trade, a New Zealand tech entrepeneur is seeing unexpected interest in her latest project.
Melanie Langlotz has helped build a life-sized robot dolphin that looks and swims just like a real bottlenose and can echo-locate and react to human gestures.
It could end up plugging the gap for struggling Chinese zoos and aquariums.
Katie Todd explains.