Water Colossus; a last-minute entry for the RIFT Create a Colossus Contest!
The sea serpent Colossus can be seen occasionally grazing the ocean surface in search for unwitting adventurers for a snack. When under attack, it takes on a secondary form by twisting and contorting bubbles of trapped air in a vortex around its vulnerable, fish-like body. This form is ever-changing; in this case it takes the shape of a many-headed hydra, with heads budding and dissipating before the eye.
I've played around with the concept of air-bubble creature parts before in a previous drawing: [link]
Made in around ten hours in Photoshop using custom brushes.