Endangered Species at World Wildlife Fund. At WWF, we are the leader in wildlife conservation and preservation of animal habitats around the world. Join World Wildlife Fund and support our conservation efforts.

Marine mammal habitat research, education, conservation, especially of humpback whales, Gloucester, Cape Ann, MA.

The Ocean Conservation Society of Southern California is committed to the protection and preservation of the ocean environment and all marine life.

The purpose of the Cheetah Conservation Fund (CCF) is to research and implement strategies for cheetah conservation in its natural habitat. From its Namibian base, the CCF works with countries that have wild cheetah populations.

Earthwatch Institute is an international non-profit organization that brings science to life for people concerned about the Earth's future. We offer volunteers the opportunity to join scientific field research projects all over the world, and help answer critical questions about climate change, biodiversity and sustainability. More than just an ecotour or vacation, Earthwatch volunteers see places

Oceana is the largest international ocean conservation organization. We work on a limited number of strategic campaigns to stop ocean pollution, protect marine wildlife, promote responsible fishing, stop offshore drilling, ocean acidification, and more.