Dive into something beautiful. This Under the Sea mosaic crochet blanket pattern brings ocean life to your hook with sea-inspired imagery. Whether you’re stitching for a beach house, a child who loves marine life, or simply want a striking conversation piece, this design creates that “wow” moment row by row.
If you are enrolled in my Beyond the Basics course, this full blanket pattern is already included—please do not purchase it twice.**

This listing is for a digital PDF crochet pattern — no physical item will be mailed.

WHAT YOU GET (Instant Download)
Your purchase includes 4 PDF files with everything you need to succeed:
• Full mosaic charts
• Clear written pattern instructions
• Detailed instruction packet
• Stitch key and chart legend
• Photo tutorials
• Video tutorials for each type of stitch used in the pattern

Use this pattern to:
• Create a bold ocean-themed blanket for a beach home
• Make a sea life afghan for a child’s room or nursery
• Stitch a nautical statement throw for summer decor
• Gift a handmade marine-inspired heirloom

SKILL LEVEL
✨ Level 2–Advanced (angle stitches)

This mosaic crochet pattern is an advanced skill level and is recommended for crocheters with experience in mosaic overlay crochet. Detailed instructions, photos, and video tutorials will guide you through each step of the project. With a little bit of patience and practice, you’ll be a pro in no time!

If you are new to angle stitches, I highly recommend trying them first with this free Heart Mug Rug pattern. https://shop.heathernobledesigns.com/products/heart-mug-rug This small 7”x 7” project is a great introduction to my angle notation system and includes my full stitch key.

FINISHED SIZE: 37”x 32”
(185 stitches x 160 rows)
Size will vary depending on yarn weight and hook.
This calculation is based on weight 3 DK yarn and hook size of 3.75mm. Gauge: 5 stitches and 5 rows=1 inch

YARN: calculated for 2 options:

Two color option:
Color A (Design, dark color) – 961 yds
Color B (Background, light color) – 1048 yds
2” Double Border – 537 yds

Rainbow Colorway:
Red – 204 yds
White (Color B-background) – 1048 yds
Orange – 166 yds
Yellow – 179 yds
Green – 166 yds
Blue – 179 yds
Purple – 173 yds

ABOUT MOSAIC CROCHET
Mosaic crochet uses one color per row to create crisp, graphic lettering and imagery — no yarn is carried along the back of the work.

Check out all the designs in my Under the Sea Collection - including totes and pillows for each of the fish motifs! https://www.ravelry.com/bundles/under-the-sea-collection-2

This pattern is divided into 5 sections (6 pages each) and is worked from the bottom up. I would suggest using the Knit Companion app (my personal preference as it is brilliant and saves on printer ink and paper), but I have also included layout instructions for the charts if you prefer to print out your pages. The written pattern sections correlate with the charts so they can be used together. I have also included a full chart on one page for those who wish to use Knit Companion (or similar technology) without all the page breaks.

Special thanks to Jane Tonnellier and Susan Morgan for testing this pattern.

IMPORTANT NOTES
• This is a digital PDF pattern only.
• Files are delivered instantly after purchase.
• Patterns are for personal use only. You may sell finished items made from this pattern — please credit Heather Noble Designs as the designer.

The instructions packet and video tutorials should answer any questions you may have. I also have a Facebook group dedicated to answering questions and building community around my patterns. Please join us! Sign up for my newsletter for exclusive offers and never miss a sale!
https://linktr.ee/heathernobledesigns