The mighty deep : $b and what we know of itGiberne, Agnes
Science
The mighty deep : $b and what we know of it
Giberne, Agnes
Marine biology; Nature study
Each lasso is not merely unwound, but is actually turned inside out,
as you may turn a stocking inside out, when drawing it off. And as the
instantaneous process takes place, poison flows with the tiny dart into
the wound that is made. Small though each lasso may be, when dozens or
hundreds of them are launched together, the result is not contemptible,
even as regards man; and ocean creatures die fast from the poison.
A cell which contains a lasso is about one five-thousandth of an inch
across; and two hundred lassos, placed end to end, would reach to about
an inch in length. When once a lasso has been darted forth, it can
never again be used, because it cannot be returned to the cell. But so
great are the supplies of them, that a sea-anemone never gets to the
end of its armoury. Even if all were used, others would speedily grow
in their place.
Some kinds of animals, living in the sea and of service to man, are
in danger of being thinned out of existence by the incessant ravages
of net and trawl, of hook and harpoon. Not so the world of Anemones.
So vast are their numbers, so rapid is their increase, that no
antagonistic forces can annihilate them.
It has been said that if every anemone on British shores were one day
swept away, carried off by an army of ardent naturalists, or destroyed
by waves in some tremendous tempest, the next inflowing tide would
bring a fresh supply, sufficient to fill all gaps.
Not less numerous, perhaps far more numerous, are the countless hordes
of Jelly-fishes, so called, though they are not fishes--of Sea-nettles,
so called, though they are not nettles.
They travel freely through the ocean depths, like fishes; and they
sting sharply, like nettles. Yet they are neither.
Another name given to them is that of “Sun-fishes,” because in calm
weather they often float close to the surface of the sea, as if
delighting to bask in sunshine. One could almost imagine that, after
the fashion of modern “luminous paint,” they are taking in sunlight,
to carry stores thereof later into dark depths, for the benefit of
less favoured comrades. But let a heavy storm arise, and swiftly these
fragile creatures wend their way into the placid depths, beyond reach
of wind and wave.
Many years ago a story was told of a certain farmer, who had heard that
medusæ were particularly good as manure. He had large supplies of them
carted to his land, with much expense and trouble. Not till later did
he learn how small a part of the creatures consisted of anything but
water; how easily he might have had the whole mass of them dried, and
then carried by hand, at almost no cost.
Medusæ, as earlier stated, are of all sizes, from tiny translucent bags
of liquid to huge discs of jelly-like substance, rivalling a man’s
umbrella in diameter.
Public-domain text, read in full here on John Shaqi.
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