wow... when i first seen it i was amazed..
for me it has a much deeper meaning than just a trippy animation.
the turtle quickly becomes a likable cute character and has some good and maybe even funny things happen to him, but then to get his revenge for his loss he has to lose his life. for me it also symbolizes how good things come and then go away suddenly without us even expecting it or being prepared. then some parts of his life flash before his eyes when he is about to die which suggests that he actually enjoyed life.. for which i think he would have wanted to keep on living instead of just dying... and having every character besides the duck thingy killed in the process.
but at least he got his revenge
(