The Vampire Diaries star is asking fans to donate $35 each to his Ian Somerhalder Foundation, which is geared towards "empowering, educating and positively impacting the planet and its creatures," according to its website.
"For my 35th birthday I have a simple goal...imagine if 1 million of the 7 billion people on earth shared just $25 with the Ian Somerhalder Foundation we could stop wishing and create change," Ian wrote on Instagram.
"2 months away, on December 8th 2013 IS my BIRTHDAY PROJECT.For me it's the most crucial time in my life and the lives of us all for the type of change on our planet as well as in us that will move us compassionately and sustainably into our future.Please send this into the beautiful and powerful organism that is social media.RETWEET,repost,resend,respond-whatever moves this message onto EVERY media," he continued.
It's no secret Ian has a big heart when it comes to environmental and animal issues.
Aside from recently being honored by Conde Nast Traveler Magazine for his environmental activism, the handsome actor recently adopted a dog he found wandering in the streets near The Vampire Diaries set in Atlanta.
The dog, Nietzsche, gave birth to a litter of eight puppies just a couple of months later.