Borrowing from Sidarta Wijaya on Saraswati:The Day for Knowledge Bali Hotel Villa Blog Culture Travel Guide Indonesia – BALIwww.COM, here is some info on Saraswati:

Today, Saturday, Balinese celebrates the Saraswati holyday, a sacred day for knowledge. Saraswati is the Goddess of Knowledge, symbolized by a beautiful woman with four hands, riding on a white swan, she symbolize that knowledge is like a beautiful woman, chase by everyone for the rest of his life. Her four hands hold, respectively, a palm leaf manuscript, a lontar, a Balinese traditional manuscript which is the source of science or knowledge; a genitri, a chain consist with 108 pieces, symbolizing that knowledge has no ending there will always be a knowledge, knowledge is never run out; and a guitar or wina, a musical instrument, it symbolizes that science is as beauty as the sound of wina and a lotus is a symbol of holiness. The swans symbolize prudence, with knowledge human can distinguish between good and evil.
For a more complete story with pictures follow the link above.