Conservation biology is the study of the conservation of nature and of Earth's biodiversity with the aim of protecting species, their habitats, and ecosystems from excessive rates of extinction and the erosion of biotic interactions.

The conservation movement, also known as nature conservation, is a political, environmental, and social movement that seeks to manage and protect natural resources, including animal, fungus, and plant species as well as their habitat for the future.

The Ecological Society of America (ESA) is a professional organization of ecological scientists.

Ecology is the branch of biology that studies the interactions between living organisms and their environment.

Marine biology is the scientific study of the biology of marine life, organisms in the sea.

Time is a concept that represents the ongoing sequence of events occurring in an irreversible succession, from the past through the present to the future.

The Wildlife Conservation Society (WCS) is a 501(c)(3) non-governmental organization headquartered at the Bronx Zoo in New York City, that aims to conserve the world's largest wild places in 14 priority regions.