1.
Science
; 166(3905): 611-3, 1969 Oct 31.
Article
in English
| MEDLINE
| ID: mdl-17778203
ABSTRACT
Shallow scattering layers consisting mainly of Calanus cristatus were detected on a trans-Pacific crossing to depths of 60 meters with a high-frequency echo sounder. Biomass estimates of these layers indicate concentrations of zoo-plankton that are greater and more extensive than previously reported in the open ocean.
2.