Translator: Joseph Geni
Reviewer: Morton Bast
Well, now we're going to the Bahamas to meet
a remarkable group of dolphins that I've been working with
in the wild for the last 28 years.
Now I'm interested in dolphins because of their large brains
and what they might be doing with all that brainpower
in the wild.
And we know they use some of that brainpower
for just living complicated lives,
but what do we really know about dolphin intelligence?
Well, we know a few things.
We know that their brain-to-body ratio,
which is a physical measure of intelligence,
is second only to humans.
Cognitively, they can understand
artificially-created languages.
And they pass self-awareness tests in mirrors.
And in some parts of the world, they use tools,
like sponges to hunt fish.
But there's one big question left:
do they have a language, and if so,