Cotton Crustacean is a Pacifica, CA based, mom and pop, paleontology, pop-up shop and biology boutique; brimming with wearable wildlife from hundreds of millions of years ago to today, all drawn by biological illustrator, Aaron John Gregory.

November 28, 2019

 Spread a little crustacean cheer this holiday season with our shirt and hard cover book combos, sure to make any ocean-life enthusiast happy for only $45! Each shirt features an illustration from its corresponding book, written by Dr. Helen Scales and illustrated by C...

October 14, 2019

Fogfest 2019 in Pacifica was amazing! Palmetto Ave was packed with super cheerful people from all over the Peninsula.

We revealed some new things this year like the “Extinction Rack”, a whole new banner and logo, a double tent booth, glow-in-the-dark Frilled Shark and...

July 21, 2019

Please join us at our next pop-up shop coming this Sunday, from 11-6pm at The Hive, located at 2335 Broadway. Urban Air features local artisans with sustainable designs and we are happy to be a part of their market this Sunday. If you have never visited one of our pop-...

July 20, 2019

Introducing the Hydrotherosaurus; the second-largest known species of plesiosaur and a California native having only been found in the central valley town of Fresno. Here we see the extremely long neck marine reptile considering some crunchy Pachydiscus ammonites as a...

May 15, 2019

We are happy to announce that this fan favorite is back in stock in Unisex sizes. The Argonaut Octopus continues to be one of the weirdest creatures in the Cotton Crustacean lineup, but it's popularity grows with every reprint. This beauty is printed right here in the...

April 4, 2019

The "tyrant lizard king" has finally arrived at Cotton Crustacean and he's not happy about the pesky pterosaurs already trying to scare him off! 

Tyrannosaurus rex vs. Nyctosaurus gracilis features two North American species; everyone's favorite terrible lizar...

February 25, 2019

What do you call a prehistoric sea scorpion that glows in the dark? 


Our ultra popular Megalograptus "sea scorpion" shirt has returned! And this time around, the enormous eurypterid has gotten a little bit bigger and a whole lot more...

February 6, 2019

This weekend we're at the Reptilian Nation Expo at the Cow Palace, San Francisco! Reptile shows are a ton of fun, super family friendly, with lots of exotic animals and friendly, knowledgable vendors. We're very excited about this new show right in our backyard.

January 10, 2019

We're honored to be featured in this month's issue of PACIFICA MAGAZINE!

Lots of lovely photos by Kyle Ludowitz of me in the booth and in my home studio, and a great interview and thorough write up by Vanitha Sankaran talking about the origins of the company and some...

December 3, 2018

Get ready! We're rolling out a new sale every day this week!

Why didn't we do this during the "black friday" craziness? Well, we feel like everyone already gets

so bombarded from every angle that weekend that we didn't want to add to the consumer chaos. We'll just do our...

November 19, 2018

We're excited and honored to be working with the Canadian Fossil Discovery Centre in Morden, Manitoba! We reworked our classic Mosasaur design to reflect they're incredible specimen of a Tylosaurus pembinensis, affectionately named "Bruce" (image below) which hol...

July 23, 2018

We're very excited to create two custom tees for my old stomping ground, Aquarium of the Bay in San Francisco down at Pier 39.

I used to work at this awesome little aquarium as a professional SCUBA diver and aquarist, working face to face with the large Sevengill shar...

April 19, 2018

I was very excited to work again with Pacifica's incredible Ocean Shore elementary school in designing two different custom t-shirts to help them raise funds for their annual Oceans411 program.

Last year they were studying prehistoric seas, but this year...

March 19, 2018

The final premiere for WonderCon 2018 this week... and this one is a BIG! In the spirit of comic convention type swag, we bring you our first mash-up design...

~ DEVONIAN DEVIL "The Fish Without Fear"! ~

Five color print on American Apparel red shirts, available in ADULT...

March 14, 2018

Another big premiere for WonderCon 2018 in Anaheim next week! We'll be unleashing this true living fossil; the always creepy, uber rare, super mysterious, strangely smiling, FRILLED SHARK (Chlamydoselachus anguineus)!

Four color print, with highlights that will GLOW IN...

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Upcoming Shows

December 8, 2019

Rockaway Tree Lighting Festival

Rockaway Beach Plaza, Pacifica, CA; 4-7pm

December 12, 2019

California Academy of Sciences: Holiday Bazaar Nightlife

San Francisco, CA; 6-9:30pm

December 13/14, 2019

Sanchez Art Center Winter Art Faire

Pacifica, CA; Friday 6-9pm, Saturday 11am-5pm

December 15, 2019

Seymour Marine Discovery Center Jingle Shells Arts & Crafts Festival

Santa Cruz, CA; 12-5:30pm

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Pacifica, CA 94044  -


All images are ©Cotton Crustacean and can not be 

reproduced in any manner without written consent

from illustrator, Aaron John Gregory.

Father and son fans in Halfmoon Bay