This ocean-themed blanket is the perfect size for a baby blanket! Or, you can join it to other squares to create an adult-sized blanket! Learn more at https://ashleeslint.com/2021/07/24/baby-crab/.

Originally published in 2021 with just two files (one for interlocking crochet and one for overlay mosaic crochet), this pattern was updated in April 2026 to include a third file (another mosaic crochet option, this one using an adjusted chart). Read more about the differences between these files at https://ashleeslint.com/tutorials/interlocking-and-mosaic-crochet/.

You will receive three files.

• interlocking crochet: line-by-line written pattern, single-page chart, 6-page chart,
• overlay mosaic crochet (original): line-by-line written pattern, single-page X-marked chart, 6-page X-marked chart,
• overlay mosaic crochet (adjusted, solid): line-by-line written pattern, single-page X-marked chart, 6-page X-marked chart.

Techniques
The Locked Filet Mesh (LFM) interlocking crochet method uses only chain spaces and double crochets to create a mesh; two colors are worked alternately which creates the pattern.

Mosaic crochet uses single crochet and double crochet stitches. The double crochet stitches cover some of the other color’s single crochet stitches to create the design. My patterns instruct you to cut your yarn at the end of each row. The back is striped but often gives a faint impression of the pattern on the front (sort of like illusion knitting).

Tutorials
I have YouTube tutorials available for both crochet methods! Follow this link to get to my YouTube channel and find my other social links: https://ashleeslint.com/link-in-bio

Important Details
Interlocking Crochet
• Gauge: 8 (DC, ch) x 8 rows = 4”
• Chart 121 x 121
• 30” / 77cm square
• 4.5 mm hook (US7)
• Worsted weight yarn (1175 - 1250 yards total)
o Main color (MC) (dark lines) – 600 yards plus 75 yards for optional border
o Accent color (AC) (background) – 575 yards

Overlay Mosaic Crochet (original chart)
• Gauge: 16 stitches x 16 rows = 4”
• Chart 121 x 121
• 30” x 30” / 70cm x 70cm
• 4.5 mm hook (US7)
• Worsted weight yarn (1170 - 1370 yards)
o Main color (design) – 585 yards
o Contrasting color (background) – 585 yards
o Plus, optional envelope border – 200 yards

Overlay Mosaic Crochet (adjusted, solid chart)
• Gauge: 14 stitches x 15 rows = 4”
• Chart 117 x 117
• 33” x 31” / 85cm x 80cm
• 5 mm hook (H-8)
• Worsted weight yarn (1325 - 1775 yards)
o Main Color (crab) – 700 yards
o Contrasting Color (background) – 625 yards
o Optional envelope border – 450 yards

Samples crocheted by Altona Newcombe, Angela Kermack, CynCityCrochets, Henriette Van Wyck, Steffi, and Tracey.

©️ Ashlee Brotzell 2026, 2021.
All rights reserved. This publication is protected under federal copyright laws. Reproduction or distribution, in whole or in part, in any medium, is strictly prohibited.

What does this mean?
This is an original pattern by Ashlee Brotzell. You may not copy, reproduce, sell, or share any part of it whether for profit or not. This includes, but is not limited to, the written pattern, the chart, and the photos. No translations or video tutorials are allowed.

Sales of your finished items are, of course, unrestricted (and I wish you all the best!). I appreciate credit given to the designer when possible but it is not a requirement. You may tag me @AshleesLint or direct people to my website www.ashleeslint.com