Bring the magic of the ocean to life with this Amigurumi Under the Sea Mobile crochet pattern! Perfect for nurseries, playrooms, or anyone who dreams of seaside adventures, this enchanting mobile features a delightful collection of sea creatures—think smiling jellyfish, curious crabs, gentle turtles, and playful fish—all suspended in a whimsical underwater dance. Whether you’re crafting a handmade baby shower gift or adding a splash of ocean charm to your own space, this pattern lets you stitch up a floating world of aquatic wonder. 🐠🐙🌊
Designed for creativity and storytelling, this pattern invites you to mix soft pastels or bold brights, experiment with textures, and personalize each sea friend with expressive details like tiny fins, sleepy eyes, or even a sparkle of embroidery. Hang them from a wooden hoop or driftwood for a natural touch, and watch as your mobile sways gently like waves in the sea. This Amigurumi Under the Sea Mobile is a joyful and satisfying project—perfect for bringing a tide of handmade magic to every stitch! 💖🧶✨
🌊 Amigurumi Under the Sea Mobile Crochet Pattern
Bring ocean dreams to life with this adorable baby mobile featuring a whale, sea turtle, starfish, jellyfish, and a wavy water base! These sweet sea creatures are ideal for nursery decor, crib mobiles, or ocean-themed gifts.
✨ Skill Level
Intermediate – Basic amigurumi shaping, surface detail work, and light assembly required.
📏 Approx. Sizes
- Whale: 20 cm (8 in) long
- Turtle: 10–12 cm (4–5 in)
- Jellyfish: 15 cm (6 in) tall including tentacles
- Starfish: 7 cm (2¾ in)
- Wave base: 25–30 cm (10–12 in) across
🧶 Materials
- Yarn: Cotton or acrylic (DK/light worsted weight)
- Light blue, cream, navy, white – Whale
- Light green, brown, cream – Turtle
- Pink – Jellyfish
- Orange – Starfish
- Light, medium, and dark blues – Waves
- Hook: 2.5–3.0 mm
- Stuffing: Polyester fiberfill
- Safety eyes: 6–8 mm (or embroider)
- Tapestry needle, scissors, stitch markers
- Mobile hardware or wooden hoop + cord
🐳 Whale Pattern
Body (Blue)
- MR, 6 sc
- inc ×6 (12)
- (1 sc, inc) ×6 (18)
- (2 sc, inc) ×6 (24)
- (3 sc, inc) ×6 (30)
- (4 sc, inc) ×6 (36)
7–18. sc around - (4 sc, dec) ×6 (30)
- (3 sc, dec) ×6 (24)
- (2 sc, dec) ×6 (18)
- (1 sc, dec) ×6 (12)
Stuff firmly. FO, weave closed.
Belly (Cream)
Same as body through Round 6, then FO. Sew to underside.
Fins (Make 2)
- MR, 6 sc
- (1 sc, inc) ×3 (9)
3–6. sc around
Flatten and sew sides. Attach to body sides.
Tail (Make 2)
- MR, 6 sc
- inc ×6 (12)
- (1 sc, inc) ×6 (18)
- sc around
Flatten, sew two pieces together at one edge. Attach to back.
Water Spout (White)
Make 2 curls: ch 10, sl st back down. Sew to top of head.
Eyes: Attach safety eyes or embroider.
🐢 Sea Turtle
Shell (Brown)
- MR, 6 sc
- inc ×6 (12)
- (1 sc, inc) ×6 (18)
- (2 sc, inc) ×6 (24)
- (3 sc, inc) ×6 (30)
FO, leave tail.
Shell Top (Cream Overlay)
Embroider simple hexagons with cream yarn onto the brown base.
Belly (Green)
Repeat shell pattern to R4 (24 sts). FO.
Head (Green)
- MR, 6 sc
- inc ×6 (12)
- (1 sc, inc) ×6 (18)
4–7. sc around - (1 sc, dec) ×6 (12)
Stuff, FO.
Eyes: 6 mm safety or embroidered
Flippers (Make 4)
- MR, 6 sc
2–4. sc around - Flatten and sew to sides and back.
Assemble belly, shell, and limbs. Embroider smile.
🌸 Jellyfish (Make 2)
Bell Top (Pink)
- MR, 6 sc
- inc ×6 (12)
- (1 sc, inc) ×6 (18)
- (2 sc, inc) ×6 (24)
- (3 sc, inc) ×6 (30)
6–8. sc around - ch 3, sl st in same st, repeat every 2nd st for ruffle
Stuff lightly, FO.
Tentacles (Make 6–8 per jellyfish)
ch 20–30, 2 sc in each st back – forms a curl. Attach evenly under bell.
⭐ Starfish
- MR, 5 sc
- inc ×5 (10)
- ch 5, sl st in 2nd ch, sc, hdc, dc, skip 1 st, sl st in next
Repeat ×5 – you now have 5 arms
FO, weave in tail.
Embroider tiny eyes if desired.
🌊 Wave Base
Use 3 shades of blue and work flat in rows.
Foundation: With dark blue, ch 41
Row 1: sc across
Rows 2–3: sc across
Change to medium blue
Rows 4–5: sc across
Change to light blue
Rows 6–8: sc across
Row 9: sc, hdc, dc, tr, dc, hdc, sc – repeat for wavy top edge
FO, weave in ends.
You can curve and shape the base when sewing to the mobile ring.
🔗 Assembly Tips
- Use strong cotton thread or cord to hang each animal at different heights.
- Hang from a hoop or mobile frame evenly to balance.
- Sew or hot glue knots on underside of hoop to secure.
- Keep mobile out of baby’s reach for safety.
💡 Customization Ideas
- Add a seahorse, crab, or seagull for variety
- Use squeakers or rattles inside some shapes
- Embroider baby’s name onto wave base
This ocean mobile is the perfect blend of playful and peaceful—an underwater adventure that will enchant little dreamers. 🐳🐢🌊
