The two conjoined grey whale calves
Media playback is unsupported on your device

'Exceptionally rare' conjoined whale carcass found off Mexican coast

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.

Go to next video: Australia pursues Japan whaling fleet