As of 2015, some free patterns for a mermaid cocoon include the mystic mermaid cocoon, adult mermaid afghan and mermaid cocoon. All three of these patterns are available online for free.
The mystic mermaid cocoon pattern is designed for babies. This pattern includes a list of the needed items. It also includes a list of abbreviations and notes about the pattern. As a crochet pattern, it lists the directions row-by-row for the cocoon with a separate list for the tail.
The adult mermaid afghan pattern comes in three sizes for taller and shorter adults. This pattern includes a downloadable and printable pattern for the rows. A tutorial video shows the steps involved in making the afghan. An included material list makes shopping for needed supplies easy, and the row-by-row instructions help the crocheter keep up with stitches.
The mermaid cocoon from RedHeart.com is designed for babies and newborns. This pattern is rated easy and acceptable for people learning to crochet. This pattern provides downloadable and printable instructions. In addition to a material list, clicking a link makes it possible to order all of the necessary supplies. Before ordering the supplies, the crafters must first select the size they are making; available sizes range from three months to 12 months.