Sea Creatures Coaster Crochet Pattern πŸͺΈ

Create a beautiful ocean-inspired coaster set with this Sea Creatures Crochet Pattern. This fun project includes cute designs like a starfish, seashell, turtle, wave, sun, and lifebuoy, perfect for beach-themed decor. 🌊

Shil

3/17/20266 min read

A cozy pastel pink yarn ball resting beside a delicate crochet hook on a cream-colored wooden table.
A cozy pastel pink yarn ball resting beside a delicate crochet hook on a cream-colored wooden table.

Difficulty
Beginner - Intermediate

Skills Required:

  • Magic ring

  • Chain stitch

  • Slip stitch

  • Single crochet

  • Half double crochet

  • Double crochet

  • Basic shaping (increases)

Time required:

Approximately 1 - 2 hours to complete one bouquet keychain depending on experience.

Final Sizes (Approx.)

  • ⭐ Starfish Coaster: 10–12 cm

  • 🐚 Seashell Coaster: 9–11 cm

  • 🐒 Turtle Coaster: 11–13 cm

  • 🌊 Wave Coaster: 10–12 cm

  • πŸ›Ÿ Lifebuoy Coaster: 10–11 cm

  • β˜€οΈ Sun Coaster: 11–12 cm

  • 🐚 Sand Dollar Coaster: 9–10 cm

Materials Used (for each coaster)

  • Cotton yarn (2–3 colors depending on design)

  • 3–4 mm crochet hook

  • Yarn needle (for weaving ends)

  • Scissors

  • Stitch marker (optional)

Recommended Yarn Colors (optional):

  • ⭐ Starfish – Beige / Peach

  • 🐚 Seashell – Cream / Sand

  • 🐒 Turtle – Green / Light Brown

  • 🌊 Wave – Blue / White

  • πŸ›Ÿ Lifebuoy – Red / White

  • β˜€οΈ Sun – Yellow / Orange

  • 🐚 Sand Dollar – Off White / Light Beige

⭐ Starfish Coaster Tutorial

Step 1 – Make the Center Circle

  1. Start by making a magic ring.

  2. Chain 1.

  3. Work 10 single crochet stitches into the magic ring.

  4. Pull the yarn tail to close the ring tightly.

  5. Join with a slip stitch in the first stitch.

You should now have a small round center for the starfish.

Step 2 – Increase the Round

  1. Chain 1.

  2. Work 2 single crochet in each stitch around the circle.

  3. Continue until you reach the end.

You should now have 20 stitches forming a flat base circle.

Step 3 – Create the First Star Arm

  1. Chain 4.

  2. Work back along the chain:

  • 1 single crochet in second chain from hook

  • 1 half double crochet in next chain

  • 1 double crochet in next chain

  1. Slip stitch into the next stitch on the base circle.

The first starfish arm is now complete.

Step 4 – Make the Remaining Arms

Repeat the same process around the circle:

  1. Chain 4.

  2. Work back along the chain:

  • 1 single crochet

  • 1 half double crochet

  • 1 double crochet

  1. Slip stitch into the next base stitch.

Continue until you create 5 arms in total.

Step 5 – Shape the Starfish

  1. Work single crochet along the edges of each arm to smooth the shape.

  2. Slip stitch at the end of the round.


Step 6 – Finish the Coaster

  1. Cut the yarn leaving a small tail.

  2. Pull the yarn through the last loop.

  3. Use a yarn needle to weave in the loose ends on the back side.

Finished size: 11 cm

🐚 Seashell Coaster Tutorial

Step 1 – Create the Base Ring

  1. Start by making a magic ring.

  2. Chain 2 (counts as the first stitch).

  3. Work 11 half double crochet into the magic ring.

  4. Pull the yarn tail to close the ring tightly.

  5. Join with a slip stitch in the first stitch.

You should now have a small semicircle base for the shell.

Step 2 – Create the Shell Base

  1. Chain 2.

  2. Work the following stitches into the ring:

  • 2 double crochet

  • Chain 1

Repeat this pattern 5 times to create shell segments.

  1. Join with a slip stitch.

This forms the fan-shaped base of the seashell.

Step 3 – Create the Shell Ridges

IIn each chain space, work:

  • 5 double crochet stitches

Repeat this across each space to form the rounded shell ridges.

You will now see the shell shape forming.

Step 4 – Shape the Shell Edges

  1. Work single crochet evenly around the outer edges of the shell.

  2. Add an extra single crochet at the corners to keep the shape smooth.

Step 5 – Finish the Coaster

  1. Slip stitch to finish the round.

  2. Cut the yarn leaving a small tail.

  3. Pull the yarn through the loop.

  4. Use a yarn needle to weave in the loose ends on the back side.

Finished size: 10 cm

🐒 Turtle Coaster Tutorial

Step 1 – Create the Shell Center

  1. Start with a magic ring using beige or light brown yarn.

  2. Chain 2 (counts as the first stitch).

  3. Work 11 double crochet into the magic ring.

  4. Pull the yarn tail to close the ring.

  5. Join with a slip stitch.

You should now have 12 stitches forming the turtle shell center.

Step 2 – Increase the Shell

  1. Chain 2.

  2. Work 2 double crochet in each stitch around.

  3. Continue until the end of the round.

  4. Join with a slip stitch.

You should now have 24 stitches and a flat round shell.

Step 3 – Add Shell Texture

  1. Chain 1.

  2. Work the following pattern around:

  • 1 double crochet

  • 2 double crochet in next stitch

  1. Repeat this pattern around the circle.

This creates a slightly textured turtle shell look.

Step 4 – Create the Turtle Head


Switch to green yarn.

  1. Attach yarn at the top of the shell.

  2. Chain 3.

  3. Work 2 single crochet back along the chain.

  4. Slip stitch into the shell.

This forms the turtle head.

Step 5 – Make the Four Flippers

Attach green yarn at the shell edge.

For each flipper:

  1. Chain 2.

  2. Work 2 half double crochet into the same stitch.

  3. Slip stitch into the next stitch.

Repeat this four times to create the front and back flippers.

Step 6 – Create the Tail

  1. Attach yarn at the bottom of the shell.

  2. Chain 2.

  3. Slip stitch into the same stitch.

This forms the small turtle tail.

Step 7 – Finish the Coaster

  1. Fasten off the yarn.

  2. Use a yarn needle to weave in all loose ends.

  3. Adjust the flippers and head so the turtle shape looks neat.

    Finished size: 12 cm

β˜€οΈ Sun Coaster Tutorial

Step 1 – Make the Center Circle

  1. Start with a magic ring.

  2. Chain 2 (counts as the first stitch).

  3. Work 11 half double crochet into the magic ring.

  4. Pull the yarn tail to close the ring tightly.

  5. Join with a slip stitch in the first stitch.

You should now have 12 stitches forming the sun center.

Step 2 – Increase the Round

  1. Chain 2.

  2. Work 2 half double crochet in each stitch around.

  3. Continue until the end of the round.

  4. Join with a slip stitch.

You should now have 24 stitches and a flat circular base.

Step 3 – Create the Sun Rays

To form the pointed rays around the sun:

  1. Chain 3.

  2. Slip stitch into the next stitch.

Repeat this pattern around the coaster:

  • Chain 3

  • Slip stitch into next stitch

This creates small triangular rays around the edge.

Step 4 – Shape the Rays

  1. Work single crochet along each ray edge to smooth the shape.

  2. Slip stitch to finish the round.



Step 5 – Finish the Coaster

  1. Cut the yarn leaving a small tail.

  2. Pull through and tighten.

  3. Use a yarn needle to weave the loose ends into the back side.

Finished size: 11 cm

🌊 Wave Coaster Tutorial

Step 1 – Create the Base Chain

  1. Start with blue yarn.

  2. Make a chain of 16 stitches.

  3. This will form the base for the wave shape.

Step 2 – First Row

  1. Work 1 single crochet in the second chain from the hook.

  2. Continue making single crochet across the row.

  3. Turn your work.

You should now have a straight base row.

Step 3 – Shape the Wave Curve

  1. Chain 1 and turn.

  2. Work the following pattern across the row:

  • 3 single crochet

  • 3 half double crochet

  • 5 double crochet

  • 3 half double crochet

  • 2 single crochet

This creates the curved wave shape.

Step 4 – Create the Wave Edge

Change to light blue yarn.

  1. Attach yarn at the edge.

  2. Work single crochet evenly along the curved edge.

At the top of the wave, add 2 single crochet in the same stitch to keep the curve smooth.

Step 5 – Add the Foam Layer

Switch to white yarn.

  1. Work slip stitch along the top curve of the wave.

  2. Use small chain stitches between slip stitches to create a foam-like effect.


Step 6 – Finish the Coaster

  1. Slip stitch to finish the round.

  2. Cut the yarn leaving a small tail.

  3. Pull through and tighten.

  4. Use a yarn needle to weave in the loose ends on the back side.

Finished size: 11 cm

πŸ›Ÿ Lifebuoy Coaster Tutorial

Step 1 – Create the Inner Ring

  1. Start with white yarn.

  2. Chain 10 stitches.

  3. Join the chain with a slip stitch to form a small circle.

This forms the center hole of the lifebuoy.

Step 2 – Crochet Around the Ring

  1. Chain 1.

  2. Work 20 single crochet stitches around the ring.

  3. Join with a slip stitch in the first stitch.

You should now have a small round ring.

Step 3 – Increase the Round

  1. Chain 1.

  2. Work 2 single crochet in each stitch around.

  3. Continue until the end of the round.

You should now have 40 stitches, creating the thick lifebuoy ring.

Step 4 – Create the Lifebuoy Stripes

Switch to orange yarn.

  1. Work 8 single crochet stitches with orange yarn.

  2. Switch back to white yarn and work 8 stitches.

Repeat this pattern around the ring:

  • 8 orange stitches

  • 8 white stitches

This creates the nautical lifebuoy stripe pattern.

Step 5 – Shape the Edges

  1. Work single crochet evenly around the outer edge of the coaster.

  2. Make sure the stitches are even so the ring stays flat.


Step 6 – Finish the Coaster

  1. Slip stitch to finish the round.

  2. Cut the yarn leaving a small tail.

  3. Pull through and tighten.

  4. Use a yarn needle to weave in the loose ends on the back side.

Finished size: 10 cm

🐚 Sand Dollar Coaster Tutorial

Round 1 – Center

  1. Magic ring.

  2. Work 10 double crochet.

Round 2 – Increase

  1. Chain 2.

  2. Work 2 double crochet in each stitch.

Total stitches = 40.

Round 3 – Pattern

Repeat:

  • Chain 2

  • Skip 1 stitch

  • Double crochet

This forms the sand dollar design.

Round 4 – Border

Work single crochet around edge.

Fasten off.
Finished size: 10 cm

You should now have a cute ocean-themed crochet coaster ready to decorate your table or gift to someone special.