About Us

The Cotton Crustacean family at one of their first events, SF Bazaar, Fort Mason, SF, 2014.

Cotton Crustacean is a family-owned, pop-up
paleontology t-shirt shop and biology boutique based out
of Pacifica, CA (Bay Area); featuring original biological
illustrations drawn by company owner and internationally 

published scientific illustrator, Aaron John Gregory. 


Our shirts are screen-printed locally in the Bay Area on the 

highest quality, super soft, premium fit t-shirts made by 

WRAP certified (Worldwide Accredited Responsible Production) 

brands like American Apparel and Bella Canvas.

We’re sharing our passion for natural history, paleontology, 

marine biology, and ecology in hopes of inspiring wonder and 

awe in people of all ages. 


By celebrating the wildlife that thrived millions of years ago in ancient seas, 

as well as the flora and fauna still found all around us today, we aim to 

shed light on how connected all life is; whether it is extinct or extant, aquatic 

or terrestrial. In doing so, we can reveal the inherent importance of studying, 

protecting, and preserving wildlife in all its infinite forms for generations to come.

Meet the owners

Aaron John Gregory has a Bachelor's Fine Art degree in Illustration from the Academy of Art, University in San Francisco, CA, where he graduated as valedictorian in December 2014; and is an alumnus of the legendary Kubert School of Graphic Art in Dover, NJ.


He is an active freelance illustrator, having been published by The Smithsonian Institute, Bloomsbury Sigma Science, Storey Publishing, IDW Comics, and several others around the world, and has been featured in many smaller natural history museums.

Aaron has been SCUBA diving for 21 years and dove professionally at Bay Area public aquariums like the California Academy of Sciences and Aquarium of the Bay. He has worked in the aquarium hobby industry since he was 16, and was the owner of the O’St. Aquarium – a high-end tropical fish store in Sacramento, CA - from 2001 - 2003.  

Aaron is also the founding member and front-man of the following acclaimed heavy metal bands, Giant Squid, Squalus, and Khôrada.

Jackie Perez Gratz has a Photography degree from The San Francisco Art Institute in San Francisco, CA. She is an accomplished cellist and songwriter, recognized around the world as a full-time member of three critically acclaimed, avant-garde metal bands, Grayceon, Amber Asylum, and Giant Squid. She is also the go-to session cellist for many of the most iconic underground metal bands today, such as Agalloch, Neurosis, and OM. Jackie is an avid swimmer and lives in Pacifica, CA with Aaron, and their two daughters, Pearl and Pepper.

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Pacifica, CA 94044  -  cottoncrustacean@gmail.com


All images are ©Cotton Crustacean and can not be 

reproduced in any manner without written consent

from illustrator, Aaron John Gregory.