as African Savannah vernal pools, killifish may, due to their ability of their eggs to survive desiccation, co-exist with their branchiopod crustacean prey which utilize the same strategy to survive dry periods. Some killifish mature in only three to six weeks in order to make the most use of temporary pools before they disappear. Some of the species within vernal pools are endangered. Fairy shrimp are crustaceans in the family Branchinectidae. It takes about 30 hours for them to start to hatch in water and it takes 50 days for them to mature. In springtime, the eggs hatch and they can go dormant. There are different types of fairy shrimp in different vernal pools because the pools can act like islands because they are so isolated. Certain plant species are also associated with vernal pools, although the particular species depend upon the ecological region. The flora of South African vernal pools, for example, are different from those of Californian vernal pools, and they have characteristic Anostraca, such as various Branchipodopsis species. In some northern areas, tadpole shrimp are more common. Some vernal pool inhabitants are becoming threatened due to habitat loss. One of these inhabitants includes the California Tiger Salamander. Habitat loss Vernal pools harbor a distinct assemblage of flora and fauna that, in some cases, aren't found anywhere else on the planet. Despite this fact, about 90% of vernal pool ecosystems in California have been destroyed. Disturbingly, much of this destruction has occurred in recent years, with about 13% of remaining vernal pools being lost in the short interval from 1995–2005. The major threats to vernal pool habitats in the Central Valley are agriculture, urbanization, changes in hydrology, climate change, and improperly managed grazing by livestock. Restoration Vernal pools are prime habitats to be targeted for restoration work due to their value as hotspots of biodiversity as well as recent history of extensive destruction and degradation. However, there have been varying rates of success attributed to various restoration efforts. A number of hypotheses existed as to why: Hypothesis 1: Constructed pools are too deep. Hypothesis 2: Edges of constructed pools narrower than natural ones. Hypothesis 3: Constructed pools have steeper slopes than natural ones. Results: Research suggest that the last two details (Hypothesis 2 & 3) are crucial in determining the habitat value of man-made vernal pools. In general, most constructed pools were too steep and did not have