3 Hearts. Blue Blood. No Bones. All Brain. Dark T-shirt

Three hearts. Blue blood. No bones. All brain. Octopuses are walking (well, swimming) proof that nature did not stick to the standard biology playbook — and we love them for it.

Each fact on this tee is real: Octopuses have three hearts, copper-based blue blood that turns blue when oxygenated, zero skeletal structure (the only hard part is their beak), and roughly 500 million neurons — with two-thirds of them distributed throughout their arms, meaning each arm can essentially think for itself.

For: marine biology lovers, the science-curious, octopus obsessives, and anyone who wants their wardrobe to start conversations about cephalopod intelligence.

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Premium Bella + Canvas 3001 unisex tee in rich dark colors. White text and white octopus illustration for maximum contrast. Soft ringspun cotton, true-to-size fit, pre-shrunk.

• 100% combed and ring-spun cotton (Heather colors contain polyester)
• Fabric weight: 4.2 oz./yd.² (142 g/m²)
• Pre-shrunk fabric
• Side-seamed construction
• Shoulder-to-shoulder taping
• Blank product sourced from Nicaragua, Mexico, Honduras, or the US

Disclaimer: The fabric is slightly sheer and may appear see-through, especially in lighter colors or under certain lighting conditions.

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!

• Traceability:
- Weaving—India, South Korea
- Dyeing—El Salvador, California
- Manufacturing—Nicaragua, Mexico, Honduras, or the US
• Contains 0% recycled polyester
• Contains 0% dangerous substances

Size guide