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Dive into a sea of color and creativity with this Ocean-Themed Granny Square Blanket crochet pattern! This design brings together classic granny squares and ocean-inspired appliqués to create a playful, textured blanket full of fun sea creatures.
- Purchase the ad-free download/printable PDF on Etsy or Ravelry.
- PIN it to your Pinterest boards for later.
- Follow the pattern below here on my blog.

Overview
This Ocean Afghan is comprised of granny squares and ocean themed appliques. The granny squares are made separately from the sea creatures. The appliques are sewn directly onto the square in which I have a video tutorial showing how to do so while leaving the back clean.
All together, the blanket makes a good size for a baby blanket or to have on display. The finished dimensions measure 30″ x 35″.
Materials
Yarn for Granny Squares
3 skeins Lion Brand Vanna’s Choice in Aquamarine
3 skeins Lion Brand Vanna’s Sky Blue
3 skeins Lion Brand Vanna’s Colonial Blue
6 skeins Lion Brand Vanna’s Choice in White (You will have some left over of each skein that will be used for some designs and also the white left over will be used to join the granny squares together)
Yarn Colors for Appliques
(amount needed for each yarn/color listed is barely a full skein of yarn, you can certainly used scrap/left over yarn on hand)
Worsted weight yarn in the following colors: Red, Pink, Yellow, Orange, Black, Navy, Light Purple, Light Green, Dark Green, Mustard, (I used both the Lion Brand Vanna’s Choice and Lops&Threads Impecable brand for the sea horse) Pink Grapefruit (Vanna’s Choice), Red Heart Cotton Scrubby (optional for coral)
Crochet Hooks
J hook (5.0mm) G hook (4.0 mm) E hook (3.5mm)
Other
Scissors and tapestry needle
6mm safety eyes for designs (optional – can be substituted by using black yarn to sew on eyes)

Instructions
Using the patterns below, make 15 white granny squares, 5 aquarmarine squares, 5 sky blue squares, and 5 colonial blue squares. Make one of each applique and sew onto white granny squares. Join granny squares with the method you prefer following the layout below. The method done for the afghan shown in the picture is an invisible seam method.
Complete with a border by single crocheting all around with white, making sure to sc 3x into each corner.
How to sew on appliqués: https://youtu.be/CRpGMPp0ALc?si=MqRzBS8iD0cgDYvH
How to join using the invisible seam/mattress stitch: https://youtu.be/It_oIqXZ920?si=bTwgm-p5nC8yY6zE

Solid Granny Square Pattern
Materials
Worsted weight yarn
J/6.00mm crochet hook
Tapestry needle & Scissors
Pattern Notes
– Chain 3 counts as a double crochet
– Square measures 6” x 6”.
– I tend to crochet loosely, you may need to go up a hook size or two to achieve the same measurements.
Pattern
Round 1: Magic Ring, ch 3, dc into ring, ch 2, *2 dc into ring, ch 2, repeat
from * 2 more times, join to beginning ch 3
Round 2: Ch 3, *dc in each st across across, [2dc, ch 2, 2dc] all into corner chain 2 space, repeat from * 3 more times, join to beginning ch 3
Round 3-5: Ch 3, *dc in each st across, [2dc, ch 2, dc] all in ch 2 space, repeat from *3 more times, dc into remaining stitches to complete the round , join to ch 3
Fasten off and weave in ends.

Photo shows how many double crochets across should be in each row for one side of the square.

Ocean Themed Applique Patterns
- Sea Turtle
- Crab
- Jelly Fish
- Dolphin
- Starfish
- Coral
- Sea Horse
- Sting Ray
- Sea Shell
- Shark
- Puffer Fish
- Tropical Fish
- Octopus
- Whale
- Clown Fish


Thank you Thank you!!! I'm so excited for another project (I already have so many and am currently working on the woodland afghan). I love your granny square projects though. It's enough variety to change it up so a project doesn't get boring and abandoned. Also, with the granny squares I truly enjoy piecing it together as I go so I can see my work coming together. Please keep the themed blankets coming!! I can't wait to see how it turns out!
Thank you so much! I agree, with this project there are many new things to work on all in one project so it's always interesting! I too love piecing it together and see it all come together, it's the best part 🙂 Happy Crocheting!
Ty!!! I am so excited! I have my first grandbaby coming in october and the theme for his room is under the sea 🙂 I am so excited to put this together!
Perfect timing!! This will be the perfect size for your grandbaby 🙂
This is adorable. I just found the turtle through Meldora's Closet. I may need to start working in this as my new niece in law loves sea creatures.
Ok I'm being special. I'm new to crochet. Can you just verify for me what DC means for this pattern. Is it double crochet stitch?
Yes! DC is a double crochet
Thank you so much
Just finished it! Love it! Wish I knew how to attach a picture so I could share. great job!
This is PERFECT! The Perfect Christmas gift for my water loving sister. Thank you so much for these beautiful patterns
These little appliques make me smile. I love the finishing touches you applied to each one with embroidering the little details for the little creatures! Thank you for sharing!
Thank you so much for this beautiful pattern. I am a self taught crocheter/knitter and came across this pattern to make for my first grand baby! It turned out beautifully and am pretty proud of myself!
Thanks again.