History of Whale

	Revision 9 . . (edit) November 29, 2001 5:50 pm by Hagedis [link]
	Revision 8 . . (edit) November 29, 2001 10:44 am by Bryan Derksen [more detail about those hippo-like fossils]
	Revision 7 . . (edit) November 14, 2001 1:45 am by (logged).191.188.xxx
	Revision 6 . . (edit) November 14, 2001 1:06 am by (logged).210.36.xxx [*fix minor typo; also, testing galeon as wikipedia frontend]
	Revision 5 . . November 14, 2001 12:53 am by Rmhermen
	Revision 4 . . November 14, 2001 12:33 am by AxelBoldt [+Cetacea, +lungs]
	Revision 3 . . (edit) October 21, 2001 10:56 pm by Vicki Rosenzweig

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Difference (from prior major revision) (minor diff, author diff)

Changed: 1c1

Whales are a group of large, exclusively aquatic placental mammals. They are broadly classed as predators, but their food ranges from plankton? to large fish. Along with the porpoises and dolphins, the whales form the order Cetacea?.

Whales are a group of large, exclusively aquatic placental mammals. They are broadly classed as predators, but their food ranges from plankton? to large fish. Along with the porpoises and dolphins, the whales form the order Cetacea?.

Changed: 3c3

The [blue whale]? is the largest living animal, and the largest mammal ever to have lived on Earth. It is a filter-feeder, using its baleen to strain plankton out of the seawater.

The [blue whale]? is the largest living animal, and the largest mammal ever to have lived on Earth. It is a filter-feeder, using its baleen to strain plankton out of the seawater and may reach 100 feet long and 150 tons.

Changed: 5c5

Many species of whales were hunted nearly to extinction, for their meat, fat (used to make lamp oil), and ambergris, a perfume ingredient. International treaties now sharply restrict whaling, but Japan and Norway still engage in some commercial whaling, and small aboriginal groups in the United States and Pacific island nations hunt whales on a small scale.

Many species of whales were hunted nearly to extinction, for their meat, fat (used to make lamp oil),oil and ambergris, a perfume ingredient. International treaties now sharply restrict whaling, but Japan and Norway still engage in some commercial whaling, and small aboriginal groups in the United States and Pacific island nations hunt whales on a small scale.

Changed: 7c7

Whales have lungs and breathe air; they evolved from land mammals which returned to the see. The precise evolution of whales is still somewhat obscure, but recent fossil discoveries in Pakistan suggest that their closest relatives on land are hippos?.

Whales have lungs and breathe air; they evolved from land mammals which returned to the sea. The precise evolution of whales is still somewhat obscure, but recent discoveries of 47-million-year-old fossils in Balochistan, Pakistan suggest that their closest relatives on land are hippos?. Previous DNA studies have also suggested a hippo-whale link.