The Pasadena freshwater shrimp was first described as "common" in 1897. There is very little known about this shrimp's life cycle, place in the California ecosystem, or even about its appearance. The only specimens known to science were collected in 1927, but even those specimens remain a mystery. The jar says, "Collected from the L.A. River, 1922, Pasadena", but the L.A. River does not run through Pasadena. The urbanization of the area combined with the channelization of its original home rivers led to its extinction. In fact, none of the waterways it once lived in are in their natural state. The California freshwater shrimp is endangered for similar reasons. The last sighting of the Pasadena freshwater shrimp was in 1933. Although Jurassic Park is fiction, scientists are working on several de-extinction projects. In fact, in 2003 scientists did bring back the extinct Pyrenean ibex, a type of wild goat, for 7 minutes before it died, showing de-extinction is possible. The Pasadena freshwater shrimp might be a good candidate. Scientists would use DNA from the 12 specimens collected in 1927 to bring back this shrimp. Many efforts are being made to protect the endangered California freshwater shrimp and its habitat. Through this knowledge, people might be able to reestablish a natural homeland for the Pasadena freshwater shrimp. If the Pasadena freshwater shrimp was brought back to life, could they ever be reintroduced to its native homelands in sunny Los Angeles, California?