Otherwise, it inhabits sand or gravel bottoms, usually where a rapid tidal current flows. Shrimps of this species function as males during the first and second years, and as females in their second and third years.
Some individuals mature first as females never functioning as males.
Females with eggs may be found year-round, but the main season is from November to April. The humpback occurs in the Bering Sea, from the Aleutian Islands to Puget Sound, and in the Ohkotsk Sea as far south as the Korean Strait. This species attains maturity as a male, and in varying proportions as a female, in the second year, and becomes a female during the third year. Subsequent survival into the fourth year is very low. Female shrimps carry eggs from November to April.