Octopus Battle- acrylic/mixed media by Greg Newbold.
In this scene from Stormalong, our intrepid hero Stormy dukes it out with a giant octopus in a liquid battleground. The ship's anchor was being dragged deeper and the ship along with it. Of course Stormy dives deep, wins the the wrestling match by tying the octopus' legs in knots and makes it safely back to the surface. I posted a couple of other pieces from this series earlier and you can see them at the links below.
Baby Stormalong discovered on the beach
Stormalong's carved memorial
Stormalong title page illustration