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This ocean mobile turns one large stuffed octopus into the support for an entire underwater scene. Six tentacles create the movement, while a clownfish, seaweed, seashell and starfish give the hanging layout enough variety to feel playful instead of repetitive.

The octopus acts as the central hub for six tentacles and four sea-life motifs.

Project at a Glance

Suggested level	Intermediate — many shaped pieces and color changes
Sample hook	4.0 mm
Yarn	Weight not specified; use yarn that makes a dense fabric with a 4 mm hook
Main hub	Stuffed blue octopus
Hanging pieces	6 tentacles + seaweed + clownfish + shell + starfish
Finished size	Custom — depends on yarn and hanging lengths
Terminology	US crochet terms

Materials

4.0 mm crochet hook (sample size)

Yarn in light blue, dark blue, bright blue, off-white, white, purple, orange, black, coral, light green and dark green, or your own palette

Polyester fiberfill

Embroidery thread for facial details

Optional small safety eyes for decorative display only

Yarn needle

Scissors

Stitch marker

Strong yarn or cord for the top suspension

Abbreviations

MR	magic ring
ch	chain
sc	single crochet
hdc	half double crochet
dc	double crochet
tr	treble crochet
inc	increase
dec	decrease
BLO	back loop only
R	round / row

Full Ocean Octopus Mobile Pattern

Build order: make the octopus hub first, then all hanging motifs, then assemble only after every strand is ready.

1. Octopus Head — R1 to R20

Work in blue.

Round	Stitch sequence	Sts
R1	6 sc in MR	6
R2	inc around	12
R3	(inc, sc) around	18
R4	(inc, 2 sc) around	24
R5	(inc, 3 sc) around	30
R6	(inc, 4 sc) around	36
R7	(inc, 5 sc) around	42
R8	(inc, 6 sc) around	48
R9	(inc, 7 sc) around	54
R10	(inc, 8 sc) around	60
R11	(inc, 9 sc) around	66
R12	(inc, 10 sc) around	72
R13-R20	sc around	72

2. Octopus Head — Shape & Close

Round	Stitch sequence	Sts
R21	(dec, sc 10) around	66
R22-R32	sc around	66
R33	(dec, sc 9) around	60
R34	(dec, sc 8) around	54
R35	(dec, sc 7) around	48

Fasten off and stuff firmly. Add the eyes, cheeks and embroidered mouth before the bottom is sewn on.

3. Bottom Circle

Round	Stitch sequence	Sts
R1	6 sc in MR	6
R2	inc around	12
R3	(inc, sc) around	18
R4	(inc, 2 sc) around	24
R5	(inc, 3 sc) around	30
R6	(inc, 4 sc) around	36
R7	(inc, 5 sc) around	42
R8	(inc, 6 sc) around	48
R9	(inc, 7 sc) around	54
R10	(inc, 8 sc) around	60

Test the bottom circle against the opening. If it is too small for your tension, continue the same increase sequence until it sits neatly inside the edge. The stitch counts do not need to match one-for-one when you sew the circle to the head opening.

4. Tentacles — Make 6

Tentacle	Instructions
1	Medium purple: ch 50; 3 dc in each chain across. Twist after finishing.
2	Dark blue: ch 80; 3 dc in each chain across. Twist.
3	Variegated purple: ch 70; 3 dc in each chain across. Twist.
4	Variegated purple: ch 60; 2 sc in each chain across. Do not twist.
5	Light blue: ch 60; 3 dc in each chain across. Twist.
6	Light blue: ch 60; 2 sc in each chain across. Do not twist.

5. Seaweed

Row 1 — first side of chain

Ch 56. Starting in 2nd ch from hook: sc in next 4 ch; [hdc 2, dc 3, hdc 2, sc 3] x2; hdc 4; dc 5; tr 4; dc 3; hdc 5.

Return along the other side

Ch 1 and work along the opposite side of the foundation chain: hdc 5; dc 3; tr 4; dc 5; hdc 4; [sc 3, hdc 2, dc 3, hdc 2] x2; sc in last 4.

Finish

With dark green yarn, sew a decorative line down the center.

Join green yarn at the top and chain to your preferred hanging length.

Leave a secure tail for attaching to the octopus base.

6. Clownfish — Body

Round	Stitch sequence	Sts
R1	Orange: 4 sc in MR	4
R2	inc around	8
R3	sc around	8
R4	(inc, sc) around	12
R5	Black: sc around	12
R6	White: (inc, 2 sc) around	16
R7	Black: sc around	16
R8-R12	Orange: sc around	16
R13	Black: sc around	16
R14	White: (dec, sc 2) around	12
R15	Black: sc around	12
R16	Orange: (dec, sc 1) around	8
R17	sc around	8
R18	dec around	4

Stuff before the final decreases. Four decreases worked over 8 stitches in R18 leave 4 stitches.

7. Clownfish — Tail, Fins & Hanging Cord

Tail

Round	Stitch sequence	Sts
Start	Orange: ch 4	—
R1	From 2nd ch: sc 3; continue on opposite side with sc 3	6
R2	sc around	6
R3	inc; sc 2; inc; sc 2	8
R4	Black: sc around	8

Fasten off, sew the tail closed, then pin and sew it to the fish body.

Fins — make 2

Round	Stitch sequence	Sts
R1	Orange: 4 sc in MR	4
R2	inc around	8
R3	sc around	8

Flatten each fin, sew closed and attach to the sides. Add small eyes or embroider them. Join yarn to the top of the fish and chain to the desired hanging length.

8. Seashell

Round	Stitch sequence	Sts
Start	Off-white/tan: ch 8	—
R1	From 2nd ch: sc 7; continue on opposite side with sc 7	14
R2	BLO: sc around	14
R3	inc; sc 6; inc; sc 6	16
R4	sc around	16
R5	inc in next 2 sts; sc 6; inc in next 2 sts; sc 6	20
R6	sc around	20
R7	sc 1; inc in next 3 sts; sc 7; inc in next 3 sts; sc 6	26
R8-R10	sc around	26
R11	sc 2; dec x3; sc 7; dec x3; sc 5	20
R12	sc 2; dec x2; sc 6; dec x2; sc 4	16
R13	sc 3; fasten off, leaving a long sewing tail	—

Stuff lightly. With white yarn, sew several vertical lines across the shell and pull gently to create ridges. Join gray yarn at the top and chain to the desired hanging length.

9. Starfish

Round	Stitch sequence	Sts
R1	Coral: 6 sc in MR	6
R2	inc around	12

Five points

For the first point: sc in first stitch, ch 7; from 2nd ch work sc, hdc 2, dc 2, tr 1. Skip the next base stitch and sc into the following stitch. Repeat the same point sequence four more times. Fasten off. Join purple yarn at the top of the starfish and chain to the desired hanging length.

Vary the tentacle textures and hanging lengths so the small sea motifs remain visible.

10. Assemble the Ocean Mobile

Place the stuffed octopus face-up and pin the six tentacles evenly around the lower edge or base.

Add the seaweed, clownfish, shell and starfish strands between the tentacles. Vary the lengths so each motif remains visible.

Sew every tentacle and motif strand securely into the base area.

Position the bottom circle inside the head opening and sew around the edge. Ease the different stitch counts together evenly.

Add a strong hanging loop or cord at the exact top center of the octopus head.

Lift the mobile, check that the face hangs level, then adjust any hanging lengths before trimming or hiding tails.

Ocean Color & Layout Ideas

Palette	Colors
Soft nursery ocean	Dusty teal + cream + sand + muted coral + lavender
Deep sea	Navy + turquoise + sea green + white + coral accent
Sunset reef	Peach + rust + lilac + pale aqua + warm cream

Keep the longest straight or lightly curved elements toward the middle and place tighter curls toward the outer edges. The fish, shell and starfish look better at different heights than on one horizontal line.

Nursery Safety

This is decorative nursery decor, not a toy. Keep the octopus, cords and every hanging motif completely out of reach. Do not place loose crochet pieces inside the crib. Check the top suspension and attachment points regularly, and remove the mobile from the crib area by 5 months or when the baby pushes up on hands and knees, whichever comes first.

FAQ

What skill level is the octopus mobile?

Intermediate is a good target because the project combines a large stuffed hub, multiple shaped motifs, color changes and final balance.

What yarn weight should I use?

The reference project does not specify a yarn weight. Use a yarn that creates a dense amigurumi fabric with your hook; the sample uses a 4 mm hook.

Can I change the sea-life colors?

Yes. The layout works well with muted nursery palettes, deep ocean colors or warm reef-inspired combinations.

Why does the clownfish finish with 4 stitches in R18?

R17 has 8 stitches. A full round of decreases works four decreases over those 8 stitches, leaving 4 stitches.