For 50 years, World Wildlife Fund (WWF) has been protecting the future of nature. WWF works in 100 countries and is supported by 1.2 million members in the United States and close to 5 million globally. WWF's unique way of working combines global reach with a foundation in science, involves action at every level from local to global, and ensures the delivery of innovative solutions that meet the needs of both people and nature. www.worldwildlife.org

Since 1947, Defenders of Wildlife has been a leading force in the protection of wildlife and wild lands. They employ innovative, science-based approaches to protect imperiled wildlife, advocate for wildlife friendly climate and renewable energy policies and conserve and restore native habitat. www.defenders.org/

Globally connected, Shark Angels around the world are taking action locally, fueled by empowering tools, a collaborative community, and a shared passion. Through positive education, media and grassroots outreach, Shark Angels are changing the future for sharks. www.sharkangels.org

Greenpeace is the largest independent direct-action environmental organization in the world. It focuses efforts on several campaigns: save oceans, whales and seafood, stop global warming, protect forests, eliminate toxic chemicals, push for no new nukes, and promote sustainable agriculture. www.greenpeace.org