If you have link to shots from the internet that you would like to license you can add them in directly to your account.
Step 1: Go to catchandrelease.com and login so you can start adding your own content
Step 2: Once on the homepage or in your workspace, you should see your existing projects. You can add content directly to a project. Click on a project, and then click on shots, where you'll see an "Add your Content" button.