PLANKTON OP THE GULP OF MAINE 
361 
It has long been known that Cyanea, like other large medusas, often acts as a 
nurse to young fish, especially to gadoids, which live beneath the bells and follow 
them in their wanderings. In north European waters, where Cyanea often swarms 
Fig. 100. — Occurrence of thescyphomedus® Aurelia aurita and Cyanea capillata. ®, locality records for Aurelia, Qrampus 
and Halcyon cruises since 1812 ; X, locality records for Cyanea, Qrampus and Halcyon cruises since 1912 . The stippled 
curve marks the approximate offshore boundary for Aurelia in the Gulf of Maine; the hatched curve the probable 
offshore boundary for Cyanea 
well out at sea, this seems to be the chief means of dispersal for the young of the 
whiting ( Gadus merlangus; Damas, 1909a). A large proportion of the European 
records for the pelagic young of the haddock have also been of specimens taken in 
