And water conservation is what Tree T-Pee is all about ... he received some 56,000 emails and sold thousands of t-shirts. While the initial $4.50 price tag has increased to $9.95 per unit ...

I gift my dad a Parks Project T-shirt, and it's always a hit. Shop these stellar shirts, and help America's National Parks ...

Through his artwork, scientific research, and numerous outreach programs, he has sparked a movement for ocean conservation ... alongside classic items like t-shirts, wall décor, etc.

It’s unclear how much water resides underneath this booming West Texas tourist haven. That makes conservation critical ... activity in the region won’t cost them their water.