The knitting and crochet website Ravelry.com offers several free mermaid-inspired knitting patterns, including one for a knit mermaid doll and another for a knitted mermaid tail children's blanket. Other websites with free mermaid knitting projects include Craftsy.com, BlackSheepWools.com and AllFreeKnitting.com.
Ravelry offers a free knitted mermaid doll pattern designed by Jenn Eady Designs on its website. The doll is made with acrylic yarn and uses US size 5 to 3.75 millimeter knitting needles. The doll is filled with stuffing to create a soft, three-dimensional toy.
Designer Cecilia Wagner lists a free pattern for a child’s lap blanket in the shape of a mermaid tail on Ravelry. This pattern uses bulky yarn and larger circular knitting needles to create an adjustable blanket that makes a wearer look like she has a mermaid tail when using the blanket. Both patterns are in a PDF format and require software such as Adobe Acrobat to download.
Another mermaid tail knitting pattern is available from Black Sheep Wools. This pattern is scalable from a child's size all the way up to an adult’s dimensions and is created with circular needles. The design features an all-over knitted contrasting scale pattern on the body and a ribbed fin.
The website All Free Knitting lists a pattern for a mermaid-inspired knitted shawl. This pattern is made with multi-colored yarn that creates a striped pattern reminiscent of the ribbing on a mermaid’s tail. Craftsy.com lists a free knitting pattern for a mermaid tail designed for a newborn baby. This design is used as a newborn photo session prop and is made with soft acrylic yarn.