The two conjoined grey whale calves
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'Exceptionally rare' conjoined whale carcass found off Mexican coast

9 January 2014 Last updated at 13:53 GMT

A pair of conjoined grey whale calves have been found by fishermen in a lagoon in Baja California, in Mexico.

Scientists say the whales - which are thought to have died shortly after birth - are exceptionally rare.

Tom Santorelli reports.