One of the most mysterious moments of a sperm whale life has been caught on camera.
The amazing pictures show an adult female sperm whale carrying the remains of a 9-m giant squid in her jaws. The female was swimming a few metres under the water surface together with a calf, and experts think that these pictures may confirm that adult sperm whales use pieces of their prey to teach offsprings how to catch their own.
The photos were taken by photographer Tony Wu near Ogasawara Islands, Japan.
See the photos at: http://www.dailymail.co.uk