I saw a doco about some new research on humpback whales. Populations of whales at either ends of Australia were found to have quite different songs (different melodies, sounds, etc.) Then, surprisingly, a whale at the eastern end of Australia was observed to be singing the same song as the whales at the Western end of the country. Then, over a period of a year or so, all of the whales at the eastern end of Australia somehow learned the new song, and eventually all of the whales at the eastern end of australia were singing the song that was once only sung by whales at the Western end of the country. The eastern whales had learnt the new song from the western whales. (Presumably a western whale had wandered around to the eastern end of the country, and taught the whales it met the new song). I found this to be quite amazing.
This indicates that whales have a type of culture (culture defined as information transferred between animals in a way that doesn't involve genetics). The other animals known to have culture include humans, some primates, and also elephants.
