Society for the Protection of Nature in Israel, or SPNI, is an Israeli non-profit environmental organization working to preserve plants, animals, and natural environments that represent bio-diversity, by protecting the lands and waters needed for their survival, and is Israel's oldest and largest conservation organization.

Amotz Zahavi was an Israeli evolutionary biologist, a Professor in the Department of Zoology at Tel Aviv University, and one of the founders of the Society for the Protection of Nature in Israel. His main work concerned the evolution of signals, particularly those signals that are indicative of fitness, and their selection for "honesty".