This one is great, too. And the page on belugas is just peerless. Get this:
There are researchers working today on the White Sea who theorize that beluga whales have a language. The research program is directed by the dean of Russian marine mammal science, Vsevolod Belkovich. He employs linguistics, underwater-projected video (of Caspar the Friendly Ghost, among other notable subjects), and even telepathy to engage these skittish animals
Casper the Friendly Ghost. White whales being played underwater cartoons of Casper the friendly ghost. Genius.