This shirt features the names of the five layers of the ocean, each swimming with silhouettes of the creatures you might find there. From the whales and plankton thriving in the epipelagic (or sunlight) zone to the starfish and tubeworms somehow surviving the pressure of 8 tons per square inch in the hadopelagic zone, the ocean is filled with a diverse array of sea creatures. Gift it to your biology partner or wear it whenever you want to remind people to protect the hundreds of thousands of species that call the ocean home.