The Seafoam Swirl Mermaid Tail Blanket: A Free Knitting Pattern for a Cozy, Textured Throw

Dive into Cozy Luxury: The Seafoam Swirl Mermaid Tail Blanket

Imagine wrapping yourself in the gentle rhythm of the ocean, where every stitch mimics the soft roll of waves against the shore. The Seafoam Swirl Mermaid Tail Blanket is more than just a throw—it's a textured, cozy escape for chilly evenings. Knit in bulky yarn with a mesmerizing wave stitch pattern, this blanket transitions from a wide hip area to a dramatic, flared tail fin. Whether you're a seasoned knitter or a confident beginner ready for a fun challenge, this free pattern will guide you through creating a stunning, snuggle-worthy masterpiece.

Materials Needed

Before you begin, gather these essentials to ensure a smooth knitting experience:

• Yarn: Bulky weight (size 5) in two colors:
  • 800 yards of Main Color (MC) – Seafoam Green
  • 400 yards of Contrast Color (CC) – Sandy Beige
• Needles:
  • US size 10.5 (6.5 mm) circular knitting needles (32-inch or longer for magic loop)
  • Set of double-pointed needles (DPNs) in the same size for the tail fin
• Notions: Stitch markers, tapestry needle for weaving ends, scissors
• Gauge: 12 stitches and 16 rows = 4 inches in stockinette stitch (blocked). Adjust needle size if needed to match gauge.

Step-by-Step Instructions

Pattern Notes & Abbreviations

Pattern Notes:

• The blanket is worked flat from the top (hip area) down to the tail, then the fin is worked in the round.
• The wave stitch pattern is a 4-row repeat.
• Slip the first stitch of every row purlwise with yarn in front for a neat edge.

Abbreviations:

• k = knit
• p = purl
• yo = yarn over
• k2tog = knit two together
• ssk = slip, slip, knit (decrease)
• st(s) = stitch(es)
• MC = Main Color (Seafoam Green)
• CC = Contrast Color (Sandy Beige)

Top Edge (Hip Area)

With MC, cast on 80 stitches using your preferred method. This will be the wide top of the blanket.

• Row 1 (WS): Slip 1 purlwise with yarn in front, purl across.
• Row 2 (RS): Slip 1 purlwise with yarn in front, *k2, yo, k2, ssk, k2tog, k2, yo, k1; repeat from * to last stitch, k1.
• Row 3: Slip 1 purlwise with yarn in front, purl across.
• Row 4: Slip 1 purlwise with yarn in front, *k1, yo, k2, ssk, k2tog, k2, yo, k2; repeat from * to last stitch, k1.

Repeat Rows 1-4 until the piece measures 30 inches from the cast-on edge, ending with a Row 3 (WS row). Cut MC, leaving a 12-inch tail for weaving later.

Tail Shaping (Decreases)

Switch to CC (Sandy Beige). You will continue the wave stitch pattern but now decrease on every RS row to taper the blanket into a tail shape.

• Row 1 (WS): Slip 1 purlwise with yarn in front, purl across.
• Row 2 (RS): Slip 1 purlwise with yarn in front, ssk (decrease), work the wave stitch pattern (Row 2 of the pattern: *k2, yo, k2, ssk, k2tog, k2, yo, k1*) across until 3 stitches remain, k2tog (decrease), k1. (2 stitches decreased)
• Row 3: Slip 1 purlwise with yarn in front, purl across.
• Row 4 (RS): Slip 1 purlwise with yarn in front, ssk, work the wave stitch pattern (Row 4: *k1, yo, k2, ssk, k2tog, k2, yo, k2*) across until 3 stitches remain, k2tog, k1. (2 stitches decreased)

Continue in this manner, decreasing on every RS row (Rows 2 and 4 of the pattern repeat), until 20 stitches remain. Cut CC, leaving a long tail (about 20 inches) for sewing or weaving later.

Tail Fin (Worked in the Round)

Divide the remaining 20 stitches evenly onto 4 double-pointed needles (5 stitches per needle). Join to work in the round, being careful not to twist the stitches. Place a stitch marker to mark the beginning of the round.

• Round 1: Knit all stitches.
• Round 2: *K1, yo, k1, yo, k1; repeat from * to end. (30 stitches)
• Round 3: Knit all stitches.
• Round 4: *K2, yo, k1, yo, k2; repeat from * to end. (40 stitches)
• Round 5: Knit all stitches.
• Round 6: *K3, yo, k1, yo, k3; repeat from * to end. (50 stitches)
• Round 7: Knit all stitches.
• Round 8: *K4, yo, k1, yo, k4; repeat from * to end. (60 stitches)
• Round 9: Knit all stitches.
• Round 10: *K5, yo, k1, yo, k5; repeat from * to end. (70 stitches)
• Round 11: Knit all stitches.
• Round 12: Bind off loosely knitwise. Cut yarn and weave in ends securely.

Finishing

Weave in all remaining ends using a tapestry needle. Gently block the blanket to open up the wave stitch pattern and shape the fin into its scalloped form. Lay flat to dry. Your Seafoam Swirl Mermaid Tail Blanket is ready to snuggle!