This is a sea serpent by the name of Naulius. I realized about halfway through that there are some hints of brown/warm silver coming through, but I couldn't fix it because the entire serpent is painted on one layer, with another for the background and another for the rays of light and ripples. Whoops.
Here we have my reaction to finding out that this was featured:

Thank you! Thank you thank you thank you!

Thank you! Thank you thank you thank you!












