Allow me to put a bit of perspective on this topic,
First up whale song. Yes humans hearing whale song did help to end whaling but it was mostly due to the fact that the main product of whaling, Whale Oil, could now be replaced with oil out of the ground.
Another thing to note. While whale numbers are increasing (which is wonderful) they can no longer hear each other.
When Moby Dick was written in the age of sail, whale songs could travel and be heard across thousands of km of oceans and possibly even cross half the planet in the pacific ocean to be heard and responded to by other whales.
Now that are drowned out by the sounds of marine diesel engines housed in the thousands of cargo ships that ply the worlds water ways.
Imagine the reaction we would receive if we proposed that humans should go back to sail to allow the whales to hear each other again.
On the topic of talking to animals...
Humans have been talking to and understanding each other for thousands of years and look at what we still do to each other despite this level of communication...
