That's one of German biologist/naturalist Ernst Haeckel's prints. You can either buy one or a few reproductions from Etsy or Art dot com (I wouldn't pay too much), or you can buy a copy of his "Art Forms in Nature" for under $20 and cut out the plates to frame.

Depending on your budget, if you can swing $140 the Taschen book that came out last year,"The Art & Science of Ernst Haeckel", has better -- in terms of both quality and quantity (and size) -- reproductions because few do art books better than Taschen.

Thank you for the Taschen book idea! I knew it was an EH print, but was unsure of spelling Ernst Hae? Lol . Many thanks for your help.. Funny thing .... Here I am requesting artwork suggestions yet no one tries to sell me their artwork lol