Glyptocephalus pacificus Lockington, 1879 The Pacific Dover sole (Microstomus pacificus), also called the slime sole or slippery sole, is a Pacific flatfish of the flounder family which ranges from Baja California to the Bering Sea.

The species was identified in proximity to a methane seep off the coast of Del Mar in Southern California.

Pacific Dover sole is generally sold whole, in steaks, or in fillets.

It is mild-tasting, with firm flesh, though "not as mild as European Dover sole".

[3] The Monterey Bay Aquarium Seafood Watch lists Pacific Dover Sole from California, US West Coast, and Alaska fisheries as "Best Choice", with fish from British Columbia listed as a "Good Alternative" due to concerns over bycatch of overfished and otherwise at-risk species.