For 10 points, identify this body of water located below a similarly named American state and east of a similarly named Mexican peninsula.
A scientific expedition documenting this body of water was undertaken in 1940 by Ed Ricketts and John Steinbeck. The Comcaac, or Seri, people live along the shores of this body of water and on this body of water's largest island, TiburÃ³n. This body of water serves as the habitat of the critically endangered (*) totoaba fish. The rarest cetacean in the world, the vaquita, lives in this body of water. When it's not blocked by dams or ► diverted for human use, the Colorado River empties into this body of water. For 10 points, identify this body of water located below a similarly named American state and east of a similarly named Mexican peninsula.
A scientific expedition documenting this body of water was undertaken in 1940 by Ed Ricketts and John Steinbeck.
Gulf of California (or Sea of Cortez; or Vermilion Sea; or Mar de CortÃ©s; or Mar Bermejo; or Golfo de California)