The full image is below, but this print is called "the deep, seamonster" and is by Emma SanCartier. The artist has a number of great projects: prints, sculptures, a book. They're amazing.
This print is available at SanCartier's etsy shop, along with many others:
SanCartier's other project is called oddFauna, which is described as "cute and sometimes disturbing beasts have an offbeat sense of humor and exist in the form of sculptures, prints and stationery." Definitely go check out the creatures she's created at the site, but here's a taste:
[via So Super Awesome]