. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. THE OLDER STAGES 153 suddenly stopped because it had taken up such a quantity of ' shrimps'^ from the sea that all the cocks were choked up.^ Gunther again, in 'William Scoresby', records an occasion when during a rough night oflF South Georgia, with the wind almost at gale force and the sea running very high, large numbers of E. superba kept coming on board for a period of 10 min. They were live krill for he adds that in the darkness 'specimens were easily collected by reason of their luminesce
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. THE OLDER STAGES 153 suddenly stopped because it had taken up such a quantity of ' shrimps'^ from the sea that all the cocks were choked up.^ Gunther again, in 'William Scoresby', records an occasion when during a rough night oflF South Georgia, with the wind almost at gale force and the sea running very high, large numbers of E. superba kept coming on board for a period of 10 min. They were live krill for he adds that in the darkness 'specimens were easily collected by reason of their luminescence', an observation suggesting this large species is perfectly at home in a turbulent and breaking sea, neither seeking, as some plankton animals are said to do (France, 1894; Schouteden, 1902), the tranquillity of the deeper layers nor finding in such rough conditions what Gushing (1951) has described as a 'physically uninhabitable' zone. The mounting catching power of our surface nets (p. 260, Tables 51 and 52) that develops as the waves get higher provides further support for this BOOM fiUlOE ROPE Fig. 16. Lateral towing on the surface from a boom. A mass stranding of Nyctiphanes australis, the most abundant euphausian of the Australian coasts and one that like the krill may occur on the surface by day so densely crowded that the sea is coloured red, is described by Dakin and Colefax (1940) in the following illuminating passage: This species occurs in our waters at times in 'mass formation'. Great shoals occur so that a bucket will function for capture as well as a tow-net. At night the effect is remarkable. Perhaps one of the most extraordinary occurrences of this nature was the night of September 14th, 1938, when such a shoal actually appeared within the limits of Sydney Heads and so became washed up in myriads on certain beaches inside the harbour.^ Crowds of people noted the luminescence. An amusing and odd effect was produced, since either the squashed Crustacea
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