Only a rude and
shapeless rough draught of a head, vaguely horse-like in contour, and
inconspicuously provided with an unobtrusive snout and a pair of very
unnoticeable eyes, at all suggests to the most microscopic observer its
animal nature. Taken as a whole, nobody could at first sight distinguish
it in any way from the waving weed among which it vegetates.
Clearly, this curious Australian cousin of the Mediterranean sea-horses
has acquired so marvellous a resemblance to a bit of fucus in order to
deceive the eyes of its ever-watchful enemies, and to become
indistinguishable from the uneatable weed whose colour and form it so
surprisingly imitates. Protective resemblances of the sort are extremely
common among the pipe-fish family, and the reason why they should be so
is no doubt sufficiently obvious at first sight to any reflecting
mind--such, for example, as the intelligent reader's. Pipe-fish, as
everybody knows, are far from giddy. They do not swim in the vortex of
piscine dissipation. Being mostly small and defenceless creatures,
lurking among the marine vegetation of the shoals and reefs, they are
usually accustomed to cling for support by their snake-like tails to the
stalks or leaves of those submerged forests. The omniscient schoolboy
must often have watched in aquariums the habits and manners of the
common sea-horses, twisted together by their long thin bodies into one
inextricable mass of living matwork, or anchored firmly with a treble
serpentine coil to some projecting branch of coralline or of quivering
sea-wrack.
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