The first three images were done in Phil Hosking's Photoshop class.
At the moment I'm most interested in the shape of the head. The combination of human and shark skull is quite difficult, as I want it to be recognisably human and shark.
At this point I consulted my chiropractor and learnt that actually, cartilage is pretty strong and would likely be able to support a human body. However, during the conversation we decided to invoke two things; a) the fact that human bones cannot naturally become cartilage and would thus have to break down in order to be replaced with cartilage, and b) artistic license.
Now if only I could figure out how to ride a horse with a collapsing spine and fused legs.