It's absolutely mind blowing to think the whales will be able to do this in early 70s. I can only wonder if what could be possible by today's hardware and moni

It's absolutely mind blowing to think the whales will be able to do this in early 70s. I can only wonder if what could be possible by today's hardware and monitoring techniques. There's a Wikipedia article on marine animal training : https://en.wikipedia.org/wiki/Marine_mammal_training https://en.wikipedia.org/wiki/Marine_mammal_training