My Cart


The name Thalassas, which means "of the sea" in Greek, was chosen because it perfectly describes how this journey began. Our company was founded by two marine biologists with a desire to learn about our oceans and use this knowledge to inspire others to protect the marine world.


Our fun sea life and ocean-inspired designs were created to educate, inspire, and help foster a sense of stewardship and connection to the marine environment so many of us love.

Our products are manufactured using Oeko-Tex(TM) certified water-based vegan inks that are free from harsh chemicals.  We use sublimation printing, using energy efficient Kornit printers that create nearly zero waste water.

Thalassas apparel products are ethically produced in North America, and are sweat-shop free.  Our leggings are printed, cut, and sewn to order to reduce waste and give you a high quality, durable product that can be worn for years.


Thalassas Sea Fans Clean-up Crew

When Chris and Kelsey were in graduate school, they volunteered every year for the Mississippi Coastal Cleanup Program's annual coast-wide cleanup event.  As a way to give back, we made it our mission to continue to organize and support beach clean-up organizations and initiatives.  With this in mind, we created the Thalassas Sea Fans Clean-up Crew!  The Sea Fans are a growing community of dedicated volunteers committed to helping keep the beaches clean in their communities.  The Sea Fans community logo uses a cleaner shrimp laid over a sea fan coral.

In addition to organizing these events, we also support like-minded groups to help further their missions of clean beaches for everyone!

For more info on events hosted by the Thalassas Sea Fans Clean-up Crew, make sure to sign up for our newsletter!




As director of operations, our resident social media maven and data diva Kelsey received her Master's degree in Coastal Sciences from the University of Southern Mississippi in 2015 after completing a management strategy evaluation for the Atlantic surfclam commercial fishery. Since then, Kelsey has appeared as an author on 16 scholarly articles in the shellfish research field.  


Chris also received his Master's degree in Coastal Sciences from the University of Southern Mississippi.  His research used carbon and nitrogen stable isotopes to examine trophic variability in multiple fish species in the Gulf of Mexico. Before earning his Master's and becoming the co-founder and marketing director for Thalassas, Chris worked in online advertising and professional sales.


We pledge to provide you with high quality products and a level of customer service that will give you a buying experience you can feel great about. We are always happy to answer questions or address any concerns, so feel free to send an email to!