biological supermarket
n.β Β«According to the federal Environmental Protection Agency, wetlands are βamong the most productive ecosystems in the world, comparable to rain forests and coral reefs.β The EPAβs website refers to them as βbiological supermarkets,β due to the βgreat volumes of food that attract many animal species.βΒ» ββWould-be builder says APA biologist βended our hopes’ for Tupper apartments” by Nathan Brown Adirondack Daily Enterprise (Saranac Lake, New York) Jan. 24, 2008. (source: Double-Tongued Dictionary)
Biological Supermarket has also been used to refer to a sex partner whose past habits leave open the possibility of infection with an STD