Humpback Whale, and some subspecies of Blue Whale, are known
for whale songs.
These are series of sounds repeated over the time.
All the whales of the same species in the same area sing the same song,
while in different oceans they sing a totally different one. Whale
songs also change over the time. They evolve slowly, some phrases
will be changed and finally a new song develops. The old songs seem not
to come up again.
is thought to have a sexual purpose, because they only sing during the
mating season. They are very complex songs where collections of
repeated sub-phrases build a phrase, collections of repeated phrases
build a theme, and collections of themes build a song. The songs are
repeated over many hours or days. They have been described as not only
the most complex whale and dolphin sounds but probably
the most complex sounds in all the world's animals.