652 DEPTHS OF THE OCEAN 



long. Similar observations have been recorded from the 

 Azores by the Prince of Monaco. 



The Boreal Area outside the Norwegian Sea. — The northern 

 North Atlantic has previously been investigated by Danish 

 expeditions on board the " Ingolf," " Thor," and " Tjalfe " in 

 the waters of western Europe, Iceland, and Greenland, by a 

 German expedition on the west coast of Greenland and by 

 British expeditions west of Britain, while Hensen's Plankton 

 Expedition also crossed this area. On the other hand, the 



Fig. 485. — Cachalot wiih i.ung mrji'es from struggle with Architeuthis. 



exceedingly interesting waters between Davis Strait and the 

 United States have been very little examined. 



The results of all these expeditions prove the northern 

 North Atlantic to contain the same pelagic animals as the 

 Norwegian Sea. According to the various bodies of water, 

 however, the animal life varies in composition in different parts 

 of the ocean. Thus to the west of Britain pelagic life is 

 temperate Atlantic, mingled to some extent with boreal forms ; 

 to the south of Iceland the boreal forms predominate, though 

 the Atlantic admixture is very important ; in Davis Strait the 

 character of the fauna is mainly Arctic, though some boreal forms 

 still appear (the capelan, for instance, seems very characteristic). 

 Proceeding from Labrador to the Northern States the purely 



