The Turtle Shell Lapghan is a great throw that the whole family will love. Use the classic shell stitch to crochet this free crochet afghan pattern. Feel free to use green and cream colored yarn as shown here, or come up with your own color scheme to complete this crochet blanket. It's also a great crochet pattern to make if you want to use up your leftover yarn. It measures 31 inches x 57 inches when complete.