Blush Pink Seahorse Baby Blanket Free Crochet Pattern

There is something magical about crocheting a blanket for a little one, and this blush pink seahorse baby blanket captures that coastal nursery charm so beautifully — soft coral seahorses, delicate flowers, and gently waving seaweed against a creamy background, all tied together with a dusty rose scalloped border.

I designed this one to look impressive while keeping the actual construction wonderfully manageable. We work a simple base blanket first, then create the appliqués separately and sew them on at the end. No complicated color changes mid-row, no confusing charts. If you can crochet basic stitches and follow along step by step, you can absolutely make this blanket.

The appliqué approach also means you can work on the little pieces during short windows of time — waiting at appointments, watching television, traveling — then assemble everything when your pieces are ready. The finished blanket measures approximately 30 inches wide by 36 inches long, perfect for a crib, stroller, or tummy time mat.

Materials

• 800 yards of worsted weight yarn in cream / off-white (Color A, base blanket)
• 300 yards of worsted weight yarn in blush pink / dusty rose (Color B, seahorses and border)
• 150 yards of worsted weight yarn in coral / peach (Color C, flowers and seahorse details)
• 100 yards of worsted weight yarn in sage green (Color D, seaweed and leaves)
• 50 yards of worsted weight yarn in light peach (Color E, flower centers)
• 5.0mm (US H/8) crochet hook for the base blanket
• 4.0mm (US G/6) crochet hook for the appliqués
• Tapestry needle for weaving in ends and sewing appliqués
• At least 4 stitch markers
• Scissors
• Rustproof pins for blocking and arranging appliqués
• Small amount of fiberfill for slight seahorse dimension (optional)

Abbreviations

• ch: chain
• sl st: slip stitch
• sc: single crochet
• hdc: half double crochet
• dc: double crochet
• inc: increase (work 2 stitches into the same stitch)
• dec: decrease (sc2tog)
• BLO: back loop only
• st/sts: stitch / stitches
• sp: space

Special Stitches

• Bobble (for the bubble appliqués): work 5 dc into a magic ring without completing the final yarn over of each dc, so you have 6 loops on your hook. Yarn over and pull through all 6 loops, then ch 1 to secure. Make varying sizes by using 4 dc for smaller bubbles or 6 dc for larger ones.

Gauge & Size

• Finished size: approximately 30 inches wide by 36 inches long
• Gauge: 16 stitches and 18 rows = 4 inches in single crochet with the 5.0mm hook
• Construction: plain single crochet base blanket, separate appliqués (3 seahorses, 6 flowers, 6 seaweed pieces, leaf clusters and bubbles) sewn on, scalloped border worked around the edge
• Skill level: Easy

Base Blanket Pattern

We start with the main blanket panel using Color A (cream) and your 5.0mm hook. Turn your work at the end of every row.

Foundation: Ch 121.

Row 1: Sc in 2nd ch from hook and in each ch across. (120 sts)

Row 2: Ch 1 (does not count as a stitch here and throughout), sc in each st across. (120 sts)

Rows 3 through 160: Repeat Row 2. (120 sts)

Yes, this is a lot of rows — put on a podcast or audiobook and let the repetition become meditative. A little checkpoint to keep you on track: at Row 80, your blanket should measure approximately 18 inches long, and at Row 160, approximately 36 inches.

Fasten off. Weave in ends. Set your base blanket aside while you create the appliqués. My tip: place a stitch marker at the beginning of Row 1 to mark the right side of your work — it helps when attaching appliqués later.

Seahorse Applique (Make 3)

These charming seahorses are the stars of the blanket. Make three total using Color B (blush pink) and your 4.0mm hook. Each seahorse measures approximately 7 inches tall when complete.

Body Section — Ch 7.

Row 1: Sc in 2nd ch from hook, sc in next 4 ch, 3 sc in last ch. Working along the opposite side of the foundation chain, sc in next 5 ch. (13 sts)

Row 2: Ch 1, turn. Sc in first 5 sts, inc in next 3 sts, sc in last 5 sts. (16 sts)

Row 3: Ch 1, turn. Sc in first 6 sts, inc in next st, sc in next 2 sts, inc in next st, sc in last 6 sts. (18 sts)

Rows 4 to 8: Ch 1, turn. Sc in each st across. (18 sts)

Row 9: Ch 1, turn. Dec, sc in next 14 sts, dec. (16 sts)

Row 10: Ch 1, turn. Dec, sc in next 12 sts, dec. (14 sts)

Rows 11 to 14: Ch 1, turn. Sc in each st across. (14 sts)

Belly Curve — Row 15: Ch 1, turn. Sc in first 10 sts, leave remaining 4 sts unworked. (10 sts)

Row 16: Ch 1, turn. Dec, sc in next 6 sts, dec. (8 sts)

Row 17: Ch 1, turn. Dec, sc in next 4 sts, dec. (6 sts)

Rows 18 to 20: Ch 1, turn. Sc in each st across. (6 sts)

Neck Section — Row 21: Ch 1, turn. Inc, sc in next 4 sts, inc. (8 sts)

Rows 22 to 26: Ch 1, turn. Sc in each st across. (8 sts)

Head — Row 27: Ch 1, turn. Inc, sc in next 6 sts, inc. (10 sts)

Rows 28 to 30: Ch 1, turn. Sc in each st across. (10 sts)

Row 31: Ch 1, turn. Dec, sc in next 6 sts, dec. (8 sts)

Row 32: Ch 1, turn. Dec, sc in next 4 sts, dec. (6 sts)

Snout — Row 33: Ch 1, turn. Dec, sc in next 2 sts, dec. (4 sts)

Rows 34 to 38: Ch 1, turn. Sc in each st across. (4 sts)

Fasten off, leaving a long tail for sewing.

Tail (worked separately and attached): Ch 20.

Row 1: Sc in 2nd ch from hook, hdc in next 3 ch, dc in next 6 ch, hdc in next 4 ch, sc in next 4 ch, sl st in last ch. (19 sts)

Fasten off, leaving a tail for sewing. Curl the tail into a spiral and tack it in place with a few stitches.

Dorsal Fin Ridge: Using Color C (coral), ch 15. Working in BLO only: sl st in 2nd ch from hook, sc, hdc, dc, hdc, sc, sl st, sc, hdc, dc, hdc, sc, sl st, sc. Fasten off. This creates a wavy ridge — sew it along the seahorse’s back.

Eye Detail: Using your tapestry needle and a small amount of cream yarn, embroider a French knot or satin stitch circle for the eye. Add a tiny black or dark brown dot if desired.

Flower Applique (Make 6)

These coral and peach flowers add softness to the blanket. Make six total: use Color C (coral) for three and Color E (light peach) for three, with your 4.0mm hook.

Flower Center — Round 1: Using your chosen color, make a magic ring. Ch 1, 6 sc into ring, sl st to first sc to join. Pull ring closed. (6 sts)

Round 2: Ch 1, inc in each st around, sl st to join. (12 sts)

Petals — Round 3: (Ch 3, dc in same st, dc in next st, ch 3, sl st in same st, sl st in next st) repeat around. (6 petals)

Fasten off, leaving a tail for sewing. For added dimension, use Color E to add a contrasting center: work 6 sc into a magic ring and sew it to the flower center.

Seaweed Applique (Make 6)

The wavy seaweed adds movement and whimsy. Use Color D (sage green) and your 4.0mm hook. Make three tall pieces (approximately 6 inches) and three medium pieces (approximately 4 inches). Working in BLO creates a natural curl.

Tall Seaweed: Ch 31.

Row 1: Working in BLO, sc in 2nd ch from hook, (hdc in next 2 ch, dc in next 2 ch, hdc in next 2 ch, sc in next 2 ch) repeat across, ending with sc in last ch.

Fasten off.

Medium Seaweed: Ch 21. Work Row 1 as above. Fasten off.

Small Leaf Clusters (Make 4): Ch 8. Sl st in 2nd ch from hook, sc, hdc, dc, hdc, sc, sl st. This creates one leaf. Make 2 to 3 leaves and join at the base for clusters.

Bubble Applique (Make 12 to 15)

Those adorable raised bubbles are simple bobble stitches worked individually. Using Color A (cream) and your 4.0mm hook, make a magic ring and work the bobble as described in Special Stitches above. Fasten off, leaving a tail for sewing.

Scalloped Border

This dusty rose border frames your blanket beautifully. Use Color B (blush pink) and your 5.0mm hook.

Round 1 (Foundation): Join yarn in any corner with a sl st. Ch 1, work sc evenly around the entire blanket, placing 3 sc in each corner. Aim for approximately 120 sc along the short sides and 160 sc along the long sides, adjusting as needed to keep the edges flat. Sl st to first sc to join.

Round 2 (Scallop Setup): Ch 1, sc in each st around, placing 3 sc in the center corner stitch. Sl st to join.

Round 3 (Scallops): (Skip 2 sts, 5 dc in next st (shell made), skip 2 sts, sl st in next st) repeat around, adjusting at the corners to maintain the pattern. Sl st to join. Fasten off. Weave in all ends.

Finishing & Assembly

Now comes the fun part — arranging your appliqués! Lay your blanket on a flat surface, right side up, and arrange the seahorses, flowers, seaweed and bubbles. Use rustproof pins to hold the pieces in place, then step back and adjust until you love the arrangement.

My suggested placement: three seahorses spaced evenly, one in the center and two flanking; flowers clustered in the upper right and lower corners; seaweed along the left and right edges, some near the seahorses; bubbles scattered throughout.

Using your tapestry needle and matching yarn tails, whip stitch around the edges of each appliqué, taking small stitches through both the appliqué edge and the blanket surface. For the seahorses, you may add a tiny bit of fiberfill before closing completely — this gives subtle dimension and is totally optional.

Weave in any remaining ends, and block your blanket if desired by wetting, pinning flat, and allowing to dry.

Tips

If some techniques feel shaky, practice on scrap yarn first — there is no rush, and each little appliqué is a perfect practice piece on its own.

Choose a soft acrylic or cotton blend labeled machine washable for baby items. Parents will thank you!

Care instructions to include when gifting: machine wash cold on a gentle cycle, tumble dry low or lay flat to dry, do not iron the appliqués directly, do not bleach.

Take your time with each piece and enjoy the process — every stitch carries love, and the combination of the creamy base, coral appliqués and scalloped border brings such coastal charm to any nursery.