Here it is, 12 vector crab outlines. Free for you to download and use as you like. This set includes: Alaskan King Crab, Blue Crab, Box Crab, Dungeness Crab, Elbow Crab, Fiddler Crab, Land Crab, Mangrove Crab, Snow Crab, Spider Crab, Stone Crab, Swimming Crab.
Download the Illustrator File:
Here's a couple screenshots of the illustrator file in outline mode. This should give you a better sense of the flexibility of the illustrations.
As with the rest of my free content, please do not redistribute this as your own. I would be more than happy to have the link back to my site.