ii8 DEPTHS OF THE OCEAN 



Calamis jinmarchicMS and C. hyperboi^eus, Euchcsta, Euthemisto, 

 Lmiacma, Aglantha, Beroe, Pleurobrachia, Mertensta, Sagitta 

 arctica, and Krohnia haniata — forms that in the Norwegian 

 Sea are met with in " Gulf Stream water" or in " Polar water." 

 At Station 80 — just beyond the continental slope — this 

 animal life was still typically represented at all depths examined, 

 but in deep water we found co-existing with it our black fish 

 and red crustaceans of the southern section. We made a few 

 hauls here with the closing net, and obtained the following : — 



In a haul from 525 metres to 235 metres we got calanids co-existing 

 with Cyclothom signata. 



In a haul from 950 metres to 525 metres w^iowwd^ EucJiceta norvegica, 

 Calanus Jinjnarchicus, Calanus Jiyperboreus and Clione limacina, together 

 with Cyclotho7ie inicrodon and the medusa Atolla. 



Besides this, our horizontal hauls gave us Gastrostomus bairdii and 

 large red prawns {Acanthephyrd). 



All the arctic forms had disappeared, however, at Station 

 81, and they did not occur again in our hauls during the rest of 

 Boreal our section to Ireland. In their place we found the boreal 

 pelagic h e. ^j^j^iais^ s\\Q}[i as we are familiar with in the Gulf Stream water 

 of the Norwegian Sea right up to Spitsbergen, strongly repre- 

 sented, everywhere mingled with true oceanic Atlantic forms, 

 like those that predominated in the southern section. At Station 

 81 we secured at the surface a quantity of eggs and young of 

 scopelids, as well as radiolaria, salpae, small Pelagia, and different 

 kinds of leptocephali ; of pteropods we got Clio pyraniidata. 

 In deep water there was the abundant oceanic fauna observed 

 in the Sargasso Sea previously referred to. If we consider this 

 short account of the animal life, together with the hydrographical 

 section (Fig. 99), the accordance will become apparent. It is at 

 Station 81 that the real oceanic "Atlantic water" or "Gulf 

 Stream water " occurs, whereas at Station 80 the cold Labrador 

 Current is still the controlling influence. 



Generally speaking, the same pelagic fauna was noted from 

 here across the Atlantic, though no doubt a closer investigation 

 may reveal various differences in the different areas traversed. 

 There is one feature that deserves particular mention, notwith- 

 standing the incompleteness of our material, namely, the 

 extraordinary abundance of forms met with from Stations 86 to 

 8S. These stations lie exactly over the longitudinal ridge that 

 stretches northivards fro77i the Azores. Just as was the case on 

 the plateau south of the Azores, so here too we made exception- 

 ally big catches at all depths, and the surface contained millions 



