'Twist and Dive - Sperm Whale'

Such broad, flat, huge flukes enable the sperm whale to churn up the waves as it dives into the ocean in a spiralling motion. Perhaps the fluke's shape gives it power to alter direction quickly below the waves.
 
My thanks to intrepid photographers who bring us wonderful images of whales and dolphins - you are very much appreciated!
 
Mounted, archival print of an oil painting by Janice Lyall