The Line
Where The Red And Blue Water Joined Was Distinctly Defined.
The Weather For Some Days Previously Had Been Calm, And The
Ocean Abounded, To An Unusual Degree, With Living Creatures.
[9]
In the sea around Tierra del Fuego, and at no great distance
from the land, I have seen narrow lines of water of a
bright red colour, from the number of crustacea, which
somewhat resemble in form large prawns. The sealers call
them whale-food. Whether whales feed on them I do not
know; but terns, cormorants, and immense herds of great
unwieldy seals derive, on some parts of the coast, their
chief sustenance from these swimming crabs. Seamen
invariably attribute the discoloration of the water to spawn;
but I found this to be the case only on one occasion. At
the distance of several leagues from the Archipelago of the
Galapagos, the ship sailed through three strips of a dark
yellowish, or mud-like water; these strips were some miles
long, but only a few yards wide, and they were separated
from the surrounding water by a sinuous yet distinct margin.
The colour was caused by little gelatinous balls, about
the fifth of an inch in diameter, in which numerous minute
spherical ovules were imbedded: they were of two distinct
kinds, one being of a reddish colour and of a different shape
from the other. I cannot form a conjecture as to what two
kinds of animals these belonged. Captain Colnett remarks,
that this appearance is very common among the Galapagos
Islands, and that the directions of the bands indicate that
of the currents; in the described case, however, the line was
caused by the wind.
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