Biological Oceanography

(^) It is the same with the extension in the California Current, often to central Baja
California:
(^) Limacina helicina: Pteropod (Fig. 10.4b)
(^) Subarctic–central transition zone^
(^) Species that inhabit all or part of the belt from 35 to 45°N, always with the
California Current extension, usually not extending west to Asia. Most have another
population or close relative in the north edge of the subantarctic.
(^) Nematoscelis difficilis: Euphausiid (Fig. 10.5)
Fig. 10.5 Distribution patterns of the euphausiids Nematoscelis difficilis (North
Pacific transition zone and California Current) and Nematoscelis megalops
(subantarctic).
(After Brinton 1962.)