Crab Coloring Pages

Make free printable crab coloring pages from 12 crabs we drew ourselves: a blue crab with paddle legs, a hermit crab in a spiral shell, a fiddler crab with one big claw, a spiny king crab, a crab with a coconut, a crab on the beach with a shell and a starfish, a crab in a rock pool, a crab by a sandcastle, a crab and a baby crab, a crab walking sideways, a patterned crab for older colorers and an easy crab for little ones. Every crab is our own simple drawing, with no film, book, game or cartoon characters, no faces and no brands, so the pages suit homes, classrooms and libraries. Print one big crab on a page, a grid of four or six small ones, a beach scene with three crabs, a fold-in-half card, or a crab mandala with small crabs round the edge and a new pattern at the press of a button. Blank crabs to decorate prints 1, 2, 4 or 6 plain crab outlines with no lines on the shell, so children can paint their own; one fills a 186 mm square on US Letter. Type a child’s name for a name page, or paste a class list to get the same crab for everyone with each name at the top. Choose simple, medium or detailed lines, never thinner than 0.5 mm. Download one multi-page PDF for US Letter or A4, a 300 DPI PNG of every page, or an SVG. No sign-up, no watermark.

100% private — everything runs in your browser. Names stay in your browser; the PDF, PNG and SVG are made on your device.

How to make and print crab coloring pages

1. Choose what to make: one big picture, several small pictures, the crabs on the beach scene, blank crabs to decorate, the lettering poster, a name page, a class set, a card, a mandala, or a whole pack.
2. Pick the picture, or tick the ones you want for a grid or pack.
3. Choose the lines: simple for little ones, medium, or detailed for older children and adults.
4. Add a title, change the poster words, type a name or paste your class list, and pick the lettering.
5. Choose US Letter or A4 and download the PDF, or a PNG of every page.
6. Print on plain paper at 100% (Actual size).

What you can use it for

• A seaside, rock pool or ocean topic at school
• A beach holiday, a summer party or a “Beach Day” card
• Design your own shell on the blank crabs
• Class sets with each child’s name
• Toddlers: the easy crab and the blue crab with simple lines
• Detailed crab mandalas and the patterned crab for teens and adults

The 12 crab pictures

Picture	Shapes to color: simple	Medium	Detailed
Blue crab	23	32	51
Hermit crab in a shell	16	29	41
Fiddler crab	23	32	54
King crab	21	35	52
Crab with a coconut	23	43	66
Crab on the beach	33	46	70
Crab in a rock pool	26	45	65
Crab and a sandcastle	32	51	76
Crab and baby crab	43	61	99
Crab walking sideways	23	33	53
Patterned crab	22	34	55
Easy crab	19	23	27

Shapes are the closed outlines the tool draws for each picture at each level, counted by the tool. Simple keeps the shells, claws, legs, eyes on their stalks, the king crab’s spines and the beach things; Medium adds grooves on the shell, the claw line and the eye centers; Detailed adds leg joints, dots and the smallest details.

Blank crabs to decorate

Crabs per page	Each fits (US Letter)	Each fits (A4)
1	186 mm square	181 mm square
2	120 mm square	129 mm square
4	89 mm square	86 mm square
6	77 mm square	83 mm square

Sizes are for the page with No title chosen; a title at the top makes them a little smaller. Each blank outline is a plain crab with an empty shell (21 shapes), so the design is up to you.

Simple to detailed lines

Lines	Outlines	Small details	Good for
Simple	1.8 mm	1.4 mm	Toddlers, chunky crayons, big markers
Medium	1.1 mm	0.8 mm	Most children, colored pencils
Detailed	0.75 mm	0.5 mm	Older children and adults, fine pens and pencils

Line widths are measured at print size. The thinnest line on any page is 0.5 mm, so every shape stays open to color.

What you can make

Page	What prints
One big picture	One picture filling the page, with an optional title at the top and an optional frame
Several small pictures	Four or six pictures on one page, each in its own box
Crabs on the beach	Three crabs on the sand (one of them a hermit crab) with the sea behind, shells and a starfish; Medium adds grooves and waves, Detailed adds the smallest lines
Blank crabs to decorate	1, 2, 4 or 6 plain crabs, to decorate
Lettering poster	Two lines of big hollow letters to color (“Beach” and “Day” or your own words) above three pictures
Name page	Words such as “Colored by” and a name in large hollow letters, with three pictures
Class set	The same picture for every child, each page with one child’s name at the top (up to 40 names)
Fold-in-half card	Picture and title on the front, a small picture on the back: 139.7 × 215.9 mm (5.5 × 8.5 in) from US Letter, 148.5 × 210 mm (A5) from A4
Crab mandala	A symmetric pattern with small crabs round the edge; every pattern number gives a new design
Whole pack	Your ticked pictures, one per page, plus the scene, the poster, three mandalas and a name page if you choose

Titles you can choose: Crabs, Beach Day, Under the Sea, Shell Yeah, Seaside Friends, Hello Summer, or your own words. Lettering styles: Fredoka, Baloo 2, Sniglet, Cherry Bomb One.

Crab facts to read while you color

• Blue crabs swim. NOAA Fisheries says they have three pairs of walking legs and rear swimming legs that look like paddles, and that their claws are bright blue; grown-up females have red tips on their claws too.
• Crabs grow by molting: they shed their hard shell as they grow, says NOAA Fisheries.
• Red king crabs are big: up to 24 pounds with a leg span of 5 feet, and covered in sharp spines, says NOAA Fisheries.
• A male fiddler crab has one large and one small claw and waves the big one back and forth to attract a female, says the National Park Service at Padre Island National Seashore.

Sources: NOAA Fisheries, Blue Crab and Red King Crab species pages; National Park Service, Padre Island National Seashore, Fiddler Crab; all read 10 November 2026.

Coloring ideas

• Blue crab: bright blue claws (add red tips for a grown-up female) and an olive or blue-green shell.
• King crab: brownish to bluish red, as NOAA describes it, with darker spines.
• Beach page: golden sand, a blue sea and a bright sun.

Printing tips

• Every page keeps a 12.7 mm (half inch) margin from the paper edge, on US Letter and A4.
• Plain paper is fine for crayons and pencils; use thicker paper or card for markers or paint.
• Print one page first and check it before printing a whole pack or class set.
• Choose Detailed lines only with fine pens or sharp pencils, and Simple lines with chunky crayons.

More things to make

• Turn a photo from a beach day into line art to color: Photo to Coloring Page.
• Draw your own symmetric patterns: Mandala Maker.
• A paper mask to color as a crab or another sea creature: Mask Template.
• A bookmark to color for a book about the seaside: Bookmark Template.

Frequently asked questions

Are these crab coloring pages free?

Yes. Every page is free to make, download and print, with no sign-up and no watermark. All the crabs are our own drawings.

Which crabs are there?

12: blue crab, hermit crab in a shell, fiddler crab, king crab, crab with a coconut, crab on the beach, crab in a rock pool, crab and a sandcastle, crab and baby crab, crab walking sideways, patterned crab, easy crab. On top of those there is a beach scene, blank crabs, a mandala, a lettering poster and name pages.

Why does the blue crab have flat back legs?

They are for swimming. NOAA Fisheries says blue crabs have three pairs of walking legs and rear swimming legs that look like paddles, and that their scientific name, Callinectes sapidus, means “beautiful savory swimmer.”

Why does the fiddler crab have one big claw?

Our fiddler crab is a male. The National Park Service says a male fiddler crab has one large and one small claw and moves the big claw back and forth, in a fiddling motion, to attract a female; a female’s claws are the same size.

How many legs does a king crab have?

NOAA Fisheries says red king crabs have three pairs of walking legs and one pair of claws, so our king crab has six legs and two claws. It also says they are covered in sharp spines and can have a leg span of 5 feet.

Can children design their own crab?

Yes. Choose Blank crabs to decorate and pick 1, 2, 4 or 6 per page. Each is a plain crab with an empty shell. With no title, one fills a 186 mm square on US Letter; six fill 77 mm squares.

Which crab pages suit toddlers and preschoolers?

Choose Simple lines: big shapes with thick outlines. The hermit crab in a shell and the easy crab have the fewest shapes, as the table shows.

Can I make a page for every child in my class?

Yes. Choose Class set, pick a picture and paste the names, one per line, up to 40. Each child gets the same picture with their own name in hollow letters at the top, all in one PDF.

Are there crab coloring pages for adults?

Yes. Choose Crab mandala with Detailed lines: each pattern number gives a different symmetric design. Choose 16 repeats for the most intricate pattern.

Can I sell what I make with these pages?

Yes. The pictures are our own drawings, and the note under the tool sets out how you may use them, including for things you sell.

How do I print the coloring pages?

Download the PDF and print it on plain paper. Choose 100% or Actual size to keep the margins and sizes as drawn; Fit to page also works if your printer cuts off the edges.

Is anything uploaded?

No. Everything runs in your browser. Names and words are not sent anywhere, and nothing is saved when you close the page.