Demersal fish flounder, sole, turbot, plaice, and halibut. The adult fish of many species have both eyes on one side of the head. When the fish hatches, one eye is located on each side of its head. But as the fish grows from the larval stage, one eye migrates to the other side of the body as a process of metamorphosis. The flatfish then changes its habits, and camouflages itself by lying on the bottom of the ocean floor with both eyes facing upwards. The side to which one eye migrates depends on the species; with some species both eyes are ultimately
Pacific sanddab Pacific sanddab The Pacific sanddab ("Citharichthys sordidus") is a species of flatfish. It is by far the most common sanddab, and it shares its habitat with the longfin sanddab ("C. xanthostigma") and the speckled sanddab ("C. stigmaeus"). It is a medium-sized flatfish, with a light brown color mottled brown or black, occasionally with white or orange spots. The Pacific sanddab is endemic to the northern Pacific Ocean, from the Sea of Japan to the coast of California. They are most commonly found at depths of , though the young inhabit shallower waters, occasionally moving into tide pools. It is an