If global warming melts Antarctica, penguins would be the least of the problems.
You'd have a sea level rise of 200'.
ALL of our seaports, around the world, would be flooded.
It would be rather a shame about the penguins, but human civilization would have far larger problems to deal with.
Yes penguins don't need ice to survive, there are penguins living on the Galapagos Islands which is near the equator, they require cold water.
Anyway the Antarctic ice is 4 miles thick, it would take thousand and thousands of years to melt, unless there was some super hot catastrophe which would wipe out all life anyway.
If that ever happened Penguins would probably thrive since they wouldn't have to walk across so much ice. Penguins probably didn't make it in the northern hemisphere because land predators would easily catch them and their babies. As long as land predators didn't evolve and survive in the Antarctic they probably would do well. It is a mighty big if though because as others pointed out, it isn't a likely thing and things would have to change considerably for that to happen in the next 1000 years.
The video is from Antarctica in the Summer.
Are there penguins in Tahiti?
No, people would take them in and make them work in factories, they would also pull carriages and have races, they would replace horses and humans. Though, some people would adopt them as personal house workers so they no longer have to clean.
One of the penguin capitals of the world is the Falkland Isles. My guess is that they would be OK.
See where else they live: http://www.seabirds.org/penguins.htm
I would think that, in the event that all of the ice of Antarctica melted, then, the penguins there would likely not be able to adapt soon enough to assure their survival.
http://www.penguinscience.com/clim_chang...
http://www.actionbioscience.org/environm...
These two links might help you understand how it's affecting them, best of luck :)
https://www.youtube.com/watch?v=NfRzoCDhqPY
