If a California roll doesn't contain real crab meat, then what might there be a form of in it's place?
California roll: A California roll or California maki is a "makizushi" sushi roll, usually made inside-out, containing cucumber, crab meat or imitation crab, and avocado. California roll:  Sometimes crab salad is substituted for the crab stick, and often the outer layer of rice in an inside-out roll ("uramaki") is sprinkled with toasted sesame seeds, "tobiko" or "masago" (capelin roe). Crab stick: Crab sticks, krab sticks, imitation crab meat or seafood sticks are a form of kamaboko, a processed seafood made of starch and finely pulverized white fish (surimi), shaped and cured to resemble the leg meat of snow crab or Japanese spider crab.
kamaboko